GSW-2020 build: support tlin in ci

.github/workflows/tlin_check.yml

@@ -0,0 +1,43 @@
+name: tlin-check
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  tlin-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+      - name: checkout tlin
+        uses: actions/checkout@v3
+        with:
+          repository: gnoverse/tlin
+          ref: main
+          path: ./tlin
+      - name: setup go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.22
+      - name: changed directories
+        id: changed_directories
+        uses: tj-actions/changed-files@v45
+        with:
+          dir_names: "true"
+      - name: list changed directories
+        run: |
+          echo "Changed directories: ${{ steps.changed_directories.outputs.all_changed_files }}"
+      - name: install tlin
+        run: |
+          cd tlin
+          go install ./cmd/tlin
+      - name: tlin check
+        run: |
+          for directory in ${{ steps.changed_directories.outputs.all_changed_files }}; do
+            echo "checking $directory ..."
+            tlin $directory
+          done