Split out the nsd API surface and use framework-connectivity-tiramisu

- Split out nsd APIs and hidden APIs to Connectivity module.
- Keep the all files in f/b/packages/Connectivity-T and add
  framework-connectivity-tiramisu library on p/m/Connectivity.
  Then make framework to use this module library.
- Remove NsdService from SystemServer which will register from
  ConnectivityServiceInitializer

Bug: 206893064
Test: m online-sdk-dev-docs
Test: atest FrameworksNetTests CtsNetTestCases
CTS-Coverage-Bug: 207804007
Merged-In: I72c7de124b9cc53f2263bd452ecd5f39e88e485b
Change-Id: I72c7de124b9cc53f2263bd452ecd5f39e88e485b
diff --git a/ApiDocs.bp b/ApiDocs.bp
index 4b5f473..ec7b194 100644
--- a/ApiDocs.bp
+++ b/ApiDocs.bp
@@ -117,6 +117,7 @@
 
         ":framework-appsearch-sources",
         ":framework-connectivity-sources",
+        ":framework-connectivity-tiramisu-updatable-sources",
         ":framework-graphics-srcs",
         ":framework-mediaprovider-sources",
         ":framework-permission-sources",