Editorconfig is a specification for configuring the IDE in order to use specific syntax or language when editing files on a project. It has built-in support for Idea and extensions for Eclipse and VSCode.

Not only that, Idea (which seems to be the most used IDE for MC development) also provides an extra set of EditorConfig instructions which apply to the format of Java code and others. See the following Idea page for more information.

Hopefully this will finish once and for all the discussion around code style in here, since it should be applied automatically once it's present (at least the rules compatible with the IDE being used, which is better than nothing).

Edit: I don't use Idea (but Eclipse, at least for now) so I can't really create the file and PR one including the settings they provide.

sounds like a non-problematic QOL improvement, so sounds good to me.