Add script to Window

I need to modify many of my scripts. I hate the need to manually copy to the Script directory after every modification.
I know that .aex can be used or loaded through folder shortcuts,
Is there any way for Script to achieve similar functions?

I tried to write a pre-loaded script and tried to load many of my scripts. I only found .evalFile(), but .evalFile() doesn't seem to add the script to the window. Is there any way to add the script to the window?
The schematic diagram is as follows