Attempt to build in test workflow

Author: vezwork

.github/workflows/test.yaml

@@ -25,6 +25,12 @@ jobs:
           sudo apt-get -y update
           sudo apt-get -y install --fix-missing xvfb
 
+      - name: Build vscode extension
+        run: |
+          cd apps/vscode
+          yarn install
+          yarn run build
+
       - name: Compile and run tests
         run: |
           yarn install --immutable --immutable-cache --check-cache