Move hiddenapi singleton rules to Soong

Move the rules that build hiddenapi-stubs-flags.txt,
hiddenapi-flags.csv and hiddenapi-greylist.csv into Soong.

Bug: 123645297
Test: m checkbuild
Test: m UNSAFE_DISABLE_HIDDEN_API_FLAGS=true
Change-Id: I90bf58710f6153ee8565994f799d3ec5699bc7fa

java/config/config.go

@@ -33,6 +33,12 @@ var (
 	DefaultLambdaStubsLibrary     = "core-lambda-stubs"
 	SdkLambdaStubsPath            = "prebuilts/sdk/tools/core-lambda-stubs.jar"
 
+	// A list of the jars that provide information about usages of the hidden API.
+	HiddenAPIExtraAppUsageJars = []string{
+		// The core-oj-hiddenapi provides information for the core-oj jar.
+		"core-oj-hiddenapi",
+	}
+
 	DefaultJacocoExcludeFilter = []string{"org.junit.*", "org.jacoco.*", "org.mockito.*"}
 
 	InstrumentFrameworkModules = []string{
@@ -107,6 +113,7 @@ func init() {
 	pctx.HostBinToolVariable("ApiCheckCmd", "apicheck")
 	pctx.HostBinToolVariable("D8Cmd", "d8")
 	pctx.HostBinToolVariable("R8Cmd", "r8-compat-proguard")
+	pctx.HostBinToolVariable("HiddenAPICmd", "hiddenapi")
 
 	pctx.VariableFunc("TurbineJar", func(ctx android.PackageVarContext) string {
 		turbine := "turbine.jar"