Add GitHub Actions workflow to build applications

.github/actions/build/action.yml

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+name: Build application
+description: Build the example application
+
+inputs:
+  node:
+    description: The node version to use
+    required: false
+    default: 18
+  working_directory:
+    description: The current working directory
+    required: true
+  config_path:
+    description: The path to the configuration file
+    required: true
+  test_cmd:
+    description: The command to run the tests
+    required: true
+    default: npm test
+
+runs:
+  using: composite
+
+  steps:
+    - name: Setup Node
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ inputs.node }}
+
+    - name: Install dependencies
+      shell: bash
+      run: npm ci
+      working-directory: ${{ inputs.working_directory }}
+
+    - name: Copy config
+      shell: bash
+      run: |
+        cp ${{ inputs.working_directory }}/${{ inputs.config_path }}/auth.config.ts.example ${{ inputs.working_directory }}/${{ inputs.config_path }}/auth.config.ts
+
+    - name: Build
+      shell: bash
+      run: npm run build
+      working-directory: ${{ inputs.working_directory }}
+
+    - name: Tests
+      shell: bash
+      run: ${{ inputs.test_cmd }}
+      working-directory: ${{ inputs.working_directory }}

.github/workflows/build.yml

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+name: Build
+
+on:
+  merge_group:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
+env:
+  NODE_VERSION: 18
+  CACHE_KEY: '${{ github.ref }}-${{ github.run_id }}-${{ github.run_attempt }}'
+
+jobs:
+  build_angular:
+    name: Build Angular
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha || github.ref }}
+
+      - name: Build Angular
+        uses: ./.github/actions/build
+        with:
+          node: ${{ env.NODE_VERSION }}
+          working_directory: angular
+          config_path: src/app
+          test_cmd: npm run test:ci
+  build_react:
+    name: Build React
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha || github.ref }}
+
+      - name: Build React
+        uses: ./.github/actions/build
+        with:
+          node: ${{ env.NODE_VERSION }}
+          working_directory: react
+          config_path: src
+  build_vue:
+    name: Build Vue
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha || github.ref }}
+
+      - name: Build Vue
+        uses: ./.github/actions/build
+        with:
+          node: ${{ env.NODE_VERSION }}
+          working_directory: vue
+          config_path: src