Write the list of ndk libraries to cc_toolchain/ndk_libs.bzl

Soong adds "--no-ndk" to cc stubs for apexes if the library is not an
NDK library. In order to port this logic, emit the list to a .bzl file.

We cannot use the exportedVars.Export* soong_injection api for this
since we need to visit all modules to get this list.

Test: m nothing
Bug: 299501496
Change-Id: If8487db85e08b32b9b40aef3371d9f3f7d5a77e0