Add lint and build gitea workflow

.gitea/workflows/lint-and-build.yml

@@ -0,0 +1,37 @@
+name: Lint and Build
+
+on:
+  pull_request:
+    branches: [main]
+    paths:
+      - 'src/**'
+  push:
+    branches: [main]
+    paths:
+      - 'src/**'
+
+jobs:
+  lint-and-build:
+    name: Run lint and build checks
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Enable corepack and yarn
+        run: corepack enable
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Run ESLint
+        run: yarn lint
+
+      - name: Run build
+        run: yarn build