Add jarjar_rename property to java modules.

It's the same mechanism that aconfig uses, but now it's exposed directly
to Android.bp files.  (I had wanted to test it out there before making
it a property just in case it didn't work well)

Bug: 352385368
Test: go test -v -run TestJarJar.*
Change-Id: I72d797d08a250be93779ee4b038a1b8fc62123b7