Aggressively cut down on the amount of actions exposed

[KTrain5169]

There are some actions that I still think we should merge for the sake of less things to pick from:

• create_file + create_folder = create_file_or_folder + { recursive?: boolean }
• All lint actions -> get_lint_problems + { path?: string }
• *_text (except find text maybe?) / *_lines -> modify_text / modify_lines (a little bit less sure on this one)
  • or alternatively, insert_* / delete_* / replace_* should be combined together?
• git actions are a whole different beast let's leave them