Add CI workflow

Author: Gokano388

.github/workflows/test.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+  schedule:
+    - cron: '17 6 * * 0'  # weekly sanity check
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+      - name: Compile-check the script
+        run: |
+          python -m py_compile iptv_codec_analyzer.py
+      - name: Run --help (smoke)
+        run: |
+          python iptv_codec_analyzer.py --help || true