Add GitHub Action for typeschecking in CI

.github/workflows/run-typescript.yml

@@ -0,0 +1,19 @@
+name: Run Typescript Checks
+
+on:
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  typescript-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+      - name: Install dependencies
+        run: npm install
+      - name: Run TypeScript check
+        run: npm run check

.github/workflows/staging.yml

@@ -12,8 +12,11 @@ jobs:
     secrets:
       AIRTABLE_TOKEN: ${{ secrets.AIRTABLE_TOKEN }}
 
+  typescript-check:
+    uses: ./.github/workflows/run-typescript.yml
+
   build:
-    needs: test
+    needs: [test, typescript-check]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4