Add framework-configinfrastructure.stubs lib

A temporary solution to add framework-configinfrastructure stubs java lib
until we add configinfrastructure module to AOSP.
This change will enable us to add framework-configinfrastructure as a
dependency to other modules.

Test: m
Merged-In: I85bd435fb95c7ee6c641cb6679affa9026cf4220
Change-Id: I504b1be870003c0a1a785ab04c04a737f77d33fb

core/java/Android.bp

@@ -493,3 +493,8 @@ java_library {
     name: "framework-configinfrastructure",
     sdk_version: "module_current",
 }
+
+java_library {
+    name: "framework-configinfrastructure.stubs.module_lib",
+    sdk_version: "module_current",
+}