CI: Add build workflow and dependabot config

Author: suhaibbinyounis

.github/dependabot.yml

@@ -0,0 +1,12 @@
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+    
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+        
+    - name: Install Dependencies
+      run: npm ci
+      
+    - name: Build and Lint
+      # 'compile' script runs: check-types && lint && node esbuild.js
+      run: npm run compile
+      
+    - name: Test
+      if: runner.os == 'Linux' # vscode-test requires a display server or xvfb on Linux, skipping for simple CI for now or strictly running unit tests
+      run: echo "Skipping UI tests in headless CI for now"