Add window relative to non-active window

[adamslc]

Is your feature request related to a problem? Please describe.
I am using the remote control protocol to automatically launch and close new windows tailing various log files. I want these windows to be below (splits layout) another specific window. My current solution is to focus the existing window, and launch the new window, but this is disruptive if I am actively typing.

Describe the solution you'd like
Ideally if kitten @ launch --match title:... matched a window, it would treat that window as active for the purposes of creating the new window, without actually stealing focus.

Describe alternatives you've considered
A current hack is to record the active window, focus, launch, focus, and hope that it is fast enough that the user doesn't notice.

[kovidgoyal]

Is there some reason you expect changing focus to be actually slow
enough to disrupt user activity? The whole operation should be done in
a few milliseconds at most unless you are running remote control over a
slow SSH link.

And note that launch --match is for matching tabs not windows.

[kovidgoyal]

Oh and if you use --no-response then it will be few ms even over ssh as it wont wait for a response from kitty.