Add pre-commit hook and linters for Android and iOS code (#2114)

## Description

This PR:
- Removes unnecessary `.gitignore`, `build.gradle` and
`proguard-rules.pro` files from the `lib/` directory. I believe those
were leftovers from when Gesture Handler could be used as a native
Android library
- Adds Gradle wrapper in the `android/` directory
- Adds Spotless for linting the Android code, similarly to how it's done
in Screens
- Adds `.clang-format` for linting the iOS code, the config is the same
as in Screens and Reanimated
- Adds a pre-commit hook similarly to how it's implemented in Screens
- Adds workflow that lints Android code
- Formats Android code so that it passes `spotlessCheck`

While this PR formats Android code, it doesn't modify the iOS one. On
Android there weren't that many changes and the number of affected files
was low. On iOS there are more changes needed in more files. The idea
behind that is that the changed files from now on will have to be
reformatted, so the style changes will be more gradual without one huge
commit changing the whole codebase. After some time we could make one
commit that updates the remaining files, which should result in a
clearer history.

Also, at some point in the future we should think about updating the
`prettier` version the root project is using to match the one in example
apps, although it would require reformatting the code. This would allow
for handling core, Example and FabricExample code using the same
`lint-staged` rule, instead of each one of those having their own.

Co-authored-by: kacperkapusciak <kacper.kapusciak@swmansion.com>
Co-authored-by: Kacper Kapuściak <39658211+kacperkapusciak@users.noreply.github.com>

Author: j-piasecki

.clang-format

@@ -0,0 +1,91 @@
+---
+AccessModifierOffset: -1
+AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlinesLeft: true
+AlignOperands:   false
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: false
+BinPackParameters: false
+BraceWrapping:
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  BeforeCatch:     false
+  BeforeElse:      false
+  IndentBraces:    false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: false
+ColumnLimit:       80
+CommentPragmas:  '^ IWYU pragma:'
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+DisableFormat:   false
+ForEachMacros:   [ FOR_EACH_RANGE, FOR_EACH, ]
+IncludeCategories:
+  - Regex:           '^<.*\.h(pp)?>'
+    Priority:        1
+  - Regex:           '^<.*'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        3
+IndentCaseLabels: true
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: true
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerAlignment: Right
+ReflowComments:  true
+SortIncludes:    true
+SpaceAfterCStyleCast: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Cpp11
+TabWidth:        8
+UseTab:          Never
+---
+Language: ObjC
+ColumnLimit:     120
+BreakBeforeBraces: WebKit
+...

.eslintrc.json

@@ -58,6 +58,7 @@
         "ts-ignore": "allow-with-description",
         "ts-expect-error": "allow-with-description"
       }
-    ]
+    ],
+    "curly": "error"
   }
 }

.github/workflows/kotlin-lint.yml

@@ -0,0 +1,44 @@
+name: Kotlin Lint
+on:
+  pull_request:
+    paths:
+      - 'android/**'
+  push:
+    branches:
+      - main
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    concurrency:
+      group: kotlin-lint-${{ github.ref }}
+      cancel-in-progress: true
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+
+      - name: Use Node.js 16
+        uses: actions/setup-node@v2
+        with:
+          node-version: 16
+          cache: 'yarn'
+
+      - uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
+
+      - name: Install node dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Restore build from cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+            android/build
+            android/.gradle
+          key: ${{ runner.os }}-kotlin-lint-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties', 'android/build.gradle') }}
+
+      - name: Lint
+        run: yarn lint:android

.github/workflows/static-root-checks.yml

@@ -26,4 +26,4 @@ jobs:
       - name: Check types
         run: yarn tsc --noEmit
       - name: Lint
-        run: yarn lint-check
+        run: yarn lint:js-root

.husky/pre-commit

@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+yarn lint-staged
+yarn ts-check

.prettierrc renamed to .prettierrc.json

@@ -1,5 +1,5 @@
 {
-  "jsxBracketSameLine": true,
+  "bracketSameLine": true,
   "printWidth": 80,
   "tabWidth": 2,
   "semi": true,

FabricExample/.prettierrc.json

@@ -4,6 +4,5 @@
   "tabWidth": 2,
   "semi": true,
   "singleQuote": true,
-  "trailingComma": "es5",
-  "quoteProps": "consistent"
+  "trailingComma": "es5"
 }

FabricExample/package.json

@@ -28,13 +28,13 @@
     "@babel/core": "^7.12.9",
     "@babel/preset-env": "^7.1.6",
     "@babel/runtime": "^7.12.5",
-    "@react-native-community/eslint-config": "^3.0.0",
+    "@react-native-community/eslint-config": "^2.0.0",
     "babel-jest": "^26.6.3",
-    "eslint": "^8.12.0",
+    "eslint": "^7.15.0",
     "jest": "^26.6.3",
     "metro-react-native-babel-preset": "^0.72.1",
     "mkdirp": "^1.0.4",
-    "prettier": "^2.6.1",
+    "prettier": "^2.2.1",
     "react-test-renderer": "^18.1.0",
     "typescript": "^4.5.5"
   },