Support alt+enter in terminal quick fixes to add a command but not execute it

[Tyriar]

This would align with the very similar run recent command:

[meganrogge]

haven't seen any requests

[Tyriar]

We should still do this, I want all actions that write to the terminal to support this consistently

[Tyriar]

@justschen is it possible to specify an alt action in the code action menu?

[justschen]

@Tyriar I see, like alt + another key to paste git fetch in the terminal instead of running it?

[Tyriar]

@justschen yep