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

framework/Android.bp

@@ -95,8 +95,7 @@ java_defaults {
         "framework-connectivity-javastream-protos",
     ],
     impl_only_static_libs: [
-        "net-utils-device-common-bpf",
-        "net-utils-device-common-struct-base",
+        "net-utils-framework-connectivity",
     ],
     libs: [
         "androidx.annotation_annotation",
@@ -123,8 +122,7 @@ java_library {
         // to generate the SDK stubs.
         // Even if the library is included in "impl_only_static_libs" of defaults. This is still
         // needed because java_library which doesn't understand "impl_only_static_libs".
-        "net-utils-device-common-bpf",
-        "net-utils-device-common-struct-base",
+        "net-utils-framework-connectivity",
     ],
     libs: [
         // This cannot be in the defaults clause above because if it were, it would be used