Add libdebugstore for Future Use by ART and Frameworks

Add libdebugstore, designed for integration with ART and frameworks. The primary purpose of it is to provide an internal API that allows in-process storage of specific events, enabling these processes to be dumped into the ANR (Application Not Responding) dump file.

Bug: 314735374
Test: atest && Tested manually
Change-Id: I3437008a388b9b642542978ba736e0a87da6772c