Add some formatting guidelines

[purple-emily]

With people contributing, everyones going to format the code slightly differently. I think adding something as simple as a .editorconfig file to the repo could make things a little more consistent.

There's also the option of adding some git hooks, but this would be a little more complicated.

An example .editorconfig could be something like:

# EditorConfig is awesome: https://EditorConfig.org

# top-most EditorConfig file
root = true

[*]
charset = utf-8
end_of_line = lf
indent_size = 4
indent_style = space
insert_final_newline = true
trim_trailing_whitespace = true

# Batch Files
[*.{cmd,bat}]
end_of_line = crlf

# JSON Files
[*.{json,json5,webmanifest}]
indent_size = 2

# YAML Files
[*.{yml,yaml}]
indent_size = 2

or we could set up something like pre-commit hook, but this will add some more dependencies to the project. Maybe a github workflow?

[Gabisonfire]

Good point. I'll think about the best way to do this.

[Gabisonfire]

Closed in favor of #36