Christian Muehlhaeuser authored Jan 11, 2020 and Kurt Hindenburg committed Jan 17, 2020

Summary:
Konsole already responds to background color status report
requests, but ignores requests for the foreground color.
This adds the support and makes Konsole behave like other xterm /
VTE-based terminals.

Test Plan:
Run 'printf "\033]10;?\a"' in a bash shell and Konsole should
respond with the current foreground color setting on stdout.