Added build job

Author: tmr232

.github/workflows/build.yaml

@@ -0,0 +1,16 @@
+name: Package Extension
+on: push
+jobs:
+  package-extension:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+
+      - run: bun install
+      - run: bun run package
+
+      - uses: actions/upload-artifact@v4
+        with:
+            name: .vsix
+            path: *.vsix