Adds fuzzers for BitSet, FileMap, String8, String16, and Vector.
Test: Ran fuzzers on Android Pixel 3a. Aggregate coverage was 1.2% (this is far lower than true coverage due to shared libraries being counted)
Change-Id: I739216fe88afa51dc2f73b857da91116853382f0
Removed unneeded cflags, moved libbase to defaults
Test: Built Android.bp successfully
Signed-off-by: Dylan Katz <dylan.katz@leviathansecurity.com>
Change-Id: I739216fe88afa51dc2f73b857da91116853382f0