Format on save

[Obscuretone]

Is your feature request related to a problem? Please describe.
It would be nice to have a code formatter / prettifier

Describe the solution you'd like
I would like an option under the Edit menu to format the code. I would also like an option to reformat on save.

Describe alternatives you've considered
There are several command line tools available, based on clang-format or written in python. There are also plugins for vscode.

Additional context
Add any other context or screenshots about the feature request here.