Add a .editorconfig file

[m-gail]

Adding a .editorconfig file would make it possible to automatically configure things like indenting or line-endings in editors to match what is used in the project.

Right now my editor defaults to a tabsize of 4, however lemmy-ui uses a tabsize of 2. Adding a .editorconfig file would make the editor automatically set the correct tabsize for the project, so I wouldn't have to manually switch, if it's set wrong.

Example:

root = true

[*.{json,ts,js,tsx,jsx}]
end_of_line = lf
charset = utf-8
indent_size = 2
indent_style = space

https://editorconfig.org/