Allow execute to be rebound to a different shortcut than `Enter`

[wbeeftink]

First of all: I love Flow. I didn't think we could have a launcher on Windows this nice outside of PowerToys.

I would like to change the default for execute to a different shortcut. In Neovim I'm used to Ctrl+P and Ctrl + N to go select previous and next items and Ctrl+Y executes the selected item.

As far as I'm aware there is no way to do this in Flow currently. Please let me know if I've missed it or if this has been requested already.