cc_prebuilt_library respect module name and stem

Installed name of prebuilt shared library should be stem or module name.
For example:

cc_prebuilt_library_shared {
  name: "libfoo",
  srcs: ["libbar.so"],
}
should install with the filename libfoo.so, and

cc_prebuilt_library_shared {
  name: "libfoo",
  stem: "libbaz",
  srcs: ["libbar.so"],
}
should install with the filename libbaz.so.

Prebuilt Windows PE library should specify its import library.
For example:

cc_prebuilt_library_shared {
  name: "libfoo",
  srcs: ["libfoo.dll"],
  windows_import_lib: "libfoo.lib",
  enabled: false,
  target: {
    windows: {
      enabled: true,
    },
  },
}

Bug: 151744695
Test: prebuilt_test.go && built walleye-userdebug
Change-Id: Ia8d0afb7fa46783c670870440432779c5fc7321a