debugger: Remember pane layout from previous debugger session (#28692)

This PR makes a debugger's pane layout persistent across session's that
use the same debug adapter.

Release Notes:

- N/A

---------

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Cole Miller <m@cole-miller.net>

Cargo.lock

@@ -4177,6 +4177,7 @@ dependencies = [
  "collections",
  "command_palette_hooks",
  "dap",
+ "db",
  "editor",
  "env_logger 0.11.8",
  "feature_flags",