Add basic PR CI

.github/workflows/ci.yml

@@ -0,0 +1,20 @@
+name: CI
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v1
+      - run: bun install --frozen-lockfile
+      - run: bun run build
+      - run: bun run lint
+      - run: bun run prettier --check .
+      - uses: actions/upload-artifact@v2
+        with:
+          name: build
+          path: out