feat req: support for multiple windows

[nyxmeowmeow]

i often have more than one browser window open with different browser profiles. it would be nice if i could search the tabs of each window individually.

implementation idea

(would only work if the user uses different browser profiles for each window)
there could be an id option in the extension preferences, and the tabs file would become tabs-1 or whatever number the id is set to. then you could run ./tabselect --id=1 to get just the tabs from the browser with id 1.

i was thinking the user could use the IPC of their wm/compositor to automatically use the id of the focused window, but im not sure how that could be done (unless theyre always kept on the same separate workspaces) as there doesnt seem to be a way to change the app-id or title of firefox

i understand if this is out of scope for the project or whatever

[snpshtwrx]

i usually don't have multiple windows open, but i will definitely think about it!