fix: specify 'session:window' for set-option command in new_window function

[coffemugtester]

re: issue - session can't load window

tmuxifier load-session $session-layout loads the windows specified in the layout --> expected behavior:

tmuxifier load-session $session-layout fails with message "no such window"; unless loading each window before loading the session --> current behavior

how to reproduce:
create session layout and create window layout
load session.

looking at debug logs:
it seems like loading the window directly, associates the window to the current session,
but when loading the session, the window layout is sourced, the set-option command needs to specify $session:$window

tmux set-option -t editor allow-rename off
no such window: window-name

[KeithETruesdell]

I made these changes manually locally and tested it with a tmuxifier load-window and a tmuxifier load-session command, the session would load the window that was previously defined. This works great for me. Thank you!

[KeithETruesdell]

....so while using this fix, eveyrthing looks good....it works as intended where it will load windows that are defined and name them appropriately when you 'load-session'...BUT i just noticed that it is also renaming the window that I start on to be the same as the first window in that session.
In my case, I have 2 tmuxifier window layouts defined, v1 and v2.
I have a tmuxifier session defined as loading window for v1 and then loading window for v2.
As part of the window definition, I rename the window to what I want, which in this case is the v1 and v2.
If I am in a different session with a window named "test", when i run the command tmuxifier load-session myProject, it will start a new session (as intended), then create 2 windows per the window definitions and rename them, but then it will also rename that "test" window.

Something that needs to be played with a bit more, but I would still be ok with this, its better than an error. There could also be an issue with how I have things defined, though I don't think its any different than the examples.