feat: add CI and publish workflows for automated testing and deployment

Author: Dante

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
+
+      - name: Compile extension
+        run: npm run compile

.github/workflows/publish.yml

@@ -0,0 +1,43 @@
+name: Publish Extension
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
+
+      - name: Compile extension
+        run: npm run compile
+
+      - name: Package extension
+        run: npx @vscode/vsce package
+
+      - name: Publish to VS Code Marketplace
+        run: npx @vscode/vsce publish -p ${{ secrets.VSCE_TOKEN }}
+        env:
+          VSCE_TOKEN: ${{ secrets.VSCE_TOKEN }}
+
+      - name: Upload VSIX as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: vsix-package
+          path: '*.vsix'