ci: add workflow for vscode tests

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - feature/**
+      - bugfix/**
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v3
+        with:
+          version: 8
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'pnpm'
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Compile TypeScript
+        run: pnpm run compile
+
+      - name: Verify compiled test files
+        run: |
+          ls -la out/test/suite/
+          find out/test -name "*.test.js"
+
+      - name: Run VS Code tests
+        run: xvfb-run --auto-servernum pnpm test