[CI][Github] Add Workflow to Run Python Tests in CI Folder

.github/workflows/check-ci.yml

@@ -0,0 +1,37 @@
+name: Check CI Scripts
+
+permissions:
+  contents: read
+
+on:
+  push:
+    paths:
+     - '.ci/**'
+     - '.github/workflows/check-ci.yml'
+  pull_request:
+    paths:
+     - '.ci/**'
+     - '.github/workflows/check-ci.yml'
+
+jobs:
+  test-python:
+    name: "Check Python Tests"
+    runs-on: ubuntu-24.04
+    if: github.repository == 'llvm/llvm-project'
+    steps:
+      - name: Fetch LLVM sources
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          sparse-checkout: .ci
+      - name: Setup Python
+        uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+        with:
+          python-version: 3.13
+          cache: 'pip'
+      - name: Install Python Dependencies
+        run: |
+          pip3 install -r .ci/all_requirements.txt
+          pip3 install pytest==8.4.1
+      - name: Run Tests
+        working-directory: .ci
+        run: pytest