Move API providing modules from bp2build to api_bp2build workspace

The module types in scope are
1. ndk_library
2. ndk_headers, versioned_ndk_headers
3. api_domain

These modules will no longer generate Bazel targets in bp2build
workspace. A new soong mode `api_bp2build` will be used to generate API
specific targets in a separate Bazel workspace at out/soong/api_bp2build

Test: go test ./bp2build

Change-Id: I01d06b6d8b8364c0d56d6d3f07f8f8bf21db31d7

android/api_domain.go

@@ -67,7 +67,6 @@ func ApiDomainFactory() Module {
 	m := &apiDomain{}
 	m.AddProperties(&m.properties)
 	InitAndroidArchModule(m, DeviceSupported, MultilibBoth)
-	InitBazelModule(m)
 	return m
 }
 
@@ -108,7 +107,9 @@ type bazelApiDomainAttributes struct {
 	Cc_api_contributions bazel.LabelListAttribute
 }
 
-func (a *apiDomain) ConvertWithBp2build(ctx TopDownMutatorContext) {
+var _ ApiProvider = (*apiDomain)(nil)
+
+func (a *apiDomain) ConvertWithApiBp2build(ctx TopDownMutatorContext) {
 	props := bazel.BazelTargetModuleProperties{
 		Rule_class:        "api_domain",
 		Bzl_load_location: "//build/bazel/rules/apis:api_domain.bzl",