Tui locals and watch windows

Hi, I hope this is an appropriate place to send this!
I have just implemented a python based extension that adds a locals windows
and watched expressions window to a tui layout.



Details here:
buxtonpaul/gdbwatches: GDB Tui extension to provide Locals and Expressions
windows (github.com) <https://github.com/buxtonpaul/gdbwatches>

It requires a recent version of GDB built with python support. Also
requires the fixed version of tui-layout.c which is in git but not in a
release package yet.


I hope someone finds this useful! Feedback welcome
Paul