refactoring: GitHub workflows clean up

.github/workflows/backend.yml

@@ -0,0 +1,34 @@
+name: Backend CI
+
+on:
+  push:
+    branches:
+      - "**"
+
+jobs:
+  persistence-unit-tests:
+    name: Unit tests for persistence functions
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+
+      - name: Cache pip dependencies
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Give execution permissions to script
+        run: chmod +x tests_runners/persistence/locally.sh
+
+      - name: Run tests
+        run: tests_runners/persistence/locally.sh

.github/workflows/frontend.yml

@@ -0,0 +1,54 @@
+name: Frontend CI
+
+on:
+  push:
+    branches:
+      - "**"
+
+jobs:
+  test:
+    name: Unit and snapshot tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Copy config file
+        run: cp config.example.js config.js
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm run test
+
+  build:
+    name: Build the project like on production deployment
+    needs: test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Copy the config file for the vis
+        run: cp config.example.js config.js
+
+      - name: Setup Node.JS
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+          cache: "npm"
+
+      - name: Install all project dependencies
+        run: npm ci
+
+      - name: Build the project (prod)
+        run: npx webpack