Support control sequences for title stacking

# Description of the new feature/enhancement

In xterm's control sequences, there are two codes for title stacking, `\033[22;0t` and `\033[22;0t`^[[1]]. Supporting this code would entail implementing a stack where the terminal title can be saved by an application and then be restored later when the application exits.

# Proposed technical implementation details (optional)

Having no understanding of the codebase, I can't suggest anything in the technical department. I can't even claim that most terminals implement these codes, so I can't reasonably demand that Windows Terminal _should_ support them, but if it did, that would be awesome.

[1]: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Miscellaneous

No files, tests, or entry points are named in the issue. Start by reading the linked xterm control-sequence reference and locating the terminal's handling for title-related control sequences. Done means the specified title-save and title-restore sequences maintain a stack and restore the previous title when requested.

Written by the indexing model from the issue text.