Add CI for build

Author: karoliineh

.github/workflows/build.yml

@@ -0,0 +1,46 @@
+name: build
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17' # TODO: what version do we want?
+          distribution: 'adopt'
+          cache: maven
+
+      - name: Set up Node.js 18
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18.x' # TODO: what version do we want?
+          # cache: npm # TODO: requires package-lock.json
+
+      - name: Build with Maven
+        run: mvn install
+
+      - name: Build with NPM
+        working-directory: ./vscode
+        run: npm install
+
+      - name: Set up VSCE
+        run: npm install -g @vscode/vsce
+
+      - name: Build with VSCE
+        working-directory: ./vscode
+        run: vsce package
+
+      - name: Upload plugin artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: wiivi-plugin
+          path: ./vscode/sv-comp-*.vsix