add build check github action

.github/workflows/build-check.yaml

@@ -0,0 +1,29 @@
+name: Build Check
+
+on:
+  pull_request:
+    branches:
+      - main
+      - develop
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Install Dependencies
+        working-directory: ./theia-ai-exerciser
+        run: yarn install
+
+      - name: Build Theia AI Exerciser
+        working-directory: ./theia-ai-exerciser
+        run: yarn build

theia-ai-exerciser/package.json

@@ -4,6 +4,7 @@
     "theia-extension"
   ],
   "version": "0.0.0",
+  "license": "MIT",
   "files": [
     "lib",
     "src"