Allow user to select formatter

[rafaelpedretti-toast]

On my company we use swiftformat as our formatter and I felt the need to add this feature into the plugin

This PR introduces the ability for the user to use any formatter he wishes and pass any arguments to it.

The change still uses the default swift-format with default --in-place argument

[hyzyla]

Hello! Thank you for that PR, I'll check it later that week

[hyzyla]

I've updated PR sligtly. Thank you for the conribution 🫡

Here is example how to configure swiftformat in settings.json:

{
  "[swift]": {
    "editor.defaultFormatter": "sweetpad.sweetpad",
    "editor.formatOnSave": true
  },
  "sweetpad.format.path": "swiftformat",
  "sweetpad.format.args": ["--quiet", "${file}"],
}

[rafaelpedretti-toast]

I've updated PR sligtly. Thank you for the conribution 🫡

Here is example how to configure swiftformat in settings.json:

{
  "[swift]": {
    "editor.defaultFormatter": "sweetpad.sweetpad",
    "editor.formatOnSave": true
  },
  "sweetpad.format.path": "swiftformat",
  "sweetpad.format.args": ["--quiet", "${file}"],
}

Thanks! this is very interesting!