use modifier key to replace environment variable

[Nauxscript]

Thank for you work! It's useful for me.

I noticed that it uses environment variable to disable the sub page navigation, in order to open the repo url directly.but most of us need the sub page and quick open a repo. so I think there is a way to do that:

After seleting a repo,

• press enter to open the url directly
• use ctrl + enter to open the sub page

1. delete this step:
   

2. connect these two steps:
   

3. double click here to chose a modifier key you like (I recommend ctrl) :
   
   

enjoy it！

and I am happy to open a pr to implement it.