refactor: change pipecat to submodule & add github alerts

.github/workflows/check-pipecat-sync.yml

@@ -0,0 +1,23 @@
+name: Check Pipecat Version Sync
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  check-sync:
+    name: Verify Pipecat Versions Match
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+          fetch-depth: 0
+      
+      - name: Make scripts executable
+        run: chmod +x scripts/*.sh
+      
+      - name: Check pipecat version synchronization
+        run: ./scripts/check-pipecat-sync.sh