[Android] Reference Tools by CMake project

Summary:
CommonCpp/Tools is used by every other native project,
as a proof-of-concept, try to incorporate the code as a separate
library.

https://linear.app/comm/issue/ENG-3003

Depends on D6721

Test Plan:
Android build gate passes

Local dev workflow also works.
This tests that the library was correctly installed and loaded by Android:

# start keyserver and native yarn dev processes
(cd keyserver && yarn dev &)
(cd native && yarn dev &)

cd native && yarn react-native run-android

Reviewers: atul, max, varun

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D6722