Both were already statically linked both in the NetworkStack module and
the framework, so this change only reorganizes the file locations.

It makes more sense to have the library files in the NetworkStack module
folder, as changes to these files will be released with the same cadence
as the module, not the framework.

Bug: 139106271
Test: built, flashed, WiFi working
Change-Id: Ifaa882b53d1084ef32db6b27d35b56eb226c468f

Bug: 144455789
Test: Build pass.
      atest TetheringConfigurationTest (PASS)

Change-Id: I9ab4c7b3aef0619046d7e3d711683dbe1f31bb50

1. getTetherApnRequired API rename to isTetherApnRequired.
2. Expose isTetherApnRequired API as system API.

Bug: 142365448
Test: Build pass.
      atest TetheringConfigurationTest (PASS)

Change-Id: Iafb2e4fbddb0251e23673742d990ad098a8ae375
Merged-In: Iafb2e4fbddb0251e23673742d990ad098a8ae375

The tether offload JNI library in this patch still have many dependencies
with internal libraries. Will have follow up changes to cut the
dependencies to let it be a unbundled library.

Bug: 136040414
Test: -build, flash, boot
      -atest TetheringTests
      -atest FrameworksNetTests

Change-Id: Iacf8e0b94135e35672de3ee77c474ee39a00c591

Bug: 136040414
Test: -build, flash, boot
      -atest TetheringTests
      -atest FrameworksNetTests

Change-Id: Ic1d9deecb66aaba0a4264a57f2e6579ea491ac9b

Bug: 136040414
Test: -build, flash, boot
      -atest TetheringTests
      -atest FrameworksNetTests

Change-Id: Ifdfc6cd95377351c37946a146b60896f07ece59d
Merged-In: Ifdfc6cd95377351c37946a146b60896f07ece59d

Add IpServer which is used to serve ip configuration, dhcp, dns proxy
and nat for downstream interface.

Bug: 136040414
Test: -build, flash, boot
      -atest TetheringTests
      -atest FrameworksNetTests

Change-Id: I23652ae0b9509abe7d38da96d523eb22ab00a343

TetheringConfiguration is a utility class to encapsulate the various
configuration elements.

Bug: 136040414
Test: -build, flash, boot
      -atest TetheringTests

Change-Id: I9434ab213bc5e0fca59f14a6c8cea554abefc3a4

This is initial patch that don't contain any service for now.

Bug: 136040414
Test: -build, flash, boot
Change-Id: I0b49d7e9c3fcba5af3025163f9cc9eafb0778116