compatibility_matrices: Add script to create the next.

Add a `bump.py` script that does the following:
- Create a commit in kernel/configs with the new versions
- Copy the latest compatibility matrix to a new compatibility matrix
- Fix Android.bp and Android.mk

Prerequisite:
- libvintf/Level.h must contain the mapping for the next release.

Test: bump.py 9 10
Bug: 279809082

Change-Id: I4520a128b39f66a03f22d24218348f5fff92e9cd