Refactor staticlibs

This CL introduces net-utils-framework-connectivity, net-utils-tethering
and net-utils-service-connectivity as staticlibs.

- net-utils-framework-connectivity will be used by
  framework-connectivity-pre-jarjar.
- net-utils-service-connectivity and net-utils-tethering are the
  static liraries used by service-connectivity-pre-jarjar and Tethering
  respectively.

Bug: 350699020
Test: CI

Change-Id: I4dbb2b0de905a576cfcf24d2d5d1f1a261d2bd68
diff --git a/staticlibs/testutils/Android.bp b/staticlibs/testutils/Android.bp
index 8c71a91..4749e75 100644
--- a/staticlibs/testutils/Android.bp
+++ b/staticlibs/testutils/Android.bp
@@ -42,6 +42,7 @@
         "net-utils-device-common-struct",
         "net-utils-device-common-struct-base",
         "net-utils-device-common-wear",
+        "net-utils-framework-connectivity",
         "modules-utils-build_system",
     ],
     lint: {