chore: add symbol publishing and tsa (#176)

Verification build:
https://dev.azure.com/monacotools/Monaco/_build/results?buildId=307217&view=results

Author: rzhao271

azure-pipelines/stable.yml

@@ -17,7 +17,13 @@ extends:
     binaryName: "pet"
     signing: true
     buildWasm: false
+    apiScanPublishSymbols: true
     apiScanSoftwareVersion: 2024 # major version of `pet` for internal reporting
+    tsa:
+      enabled: true
+      config:
+        areaPath: "Visual Studio Code Python Extensions"
+        serviceTreeID: 6e6194bc-7baa-4486-86d0-9f5419626d46
 
     buildPlatforms:
       - name: Linux