Modify Soong to utilize from-text android.jar in build

Context
- from-text android.jar files are built using Metalava, and these can be
  utilized in `decodeSdkDep` so that any modules that depends on APIs
  can be compiled using from-text android.jars
- This change removes dependency on source java files when compiling
  stub android.jar files

Implementation
- Modify java_api_library module to create system modules using the
  generated android.jar
- Replace modules in decodeSdkDep to link against java_api_library
  modules
- Add --build-from-text-stub flag to hide the feature behind a flag

Test: m --build-from-text-stub
Bug: 271154441
Change-Id: I104df595edc65c0006820d5ae5b15f1fb167e190

android/sdk_version.go

@@ -94,8 +94,9 @@ func (k SdkKind) JavaLibraryName(c Config) string {
 // not check if either module exists.
 // TODO: Return .txt (single-tree or multi-tree equivalents) based on config
 func JavaLibraryNameFromText(c Config, name string) string {
-	// This returns the default for now.
-	// TODO: Implement this
+	if c.BuildFromTextStub() {
+		return name + ".from-text"
+	}
 	return name
 }