Use Consistent Configuration File Format

[rayhanadev]

Right now we have .---rc's and ---.config.json's and ---.config.js's everywhere and frankly it's a pain. We need to use a consistent file format to maintain our configuration files.

I'm opting with ---.config.cjs since it's most natural.

[abhay7dev]

so no ---.config.mjs or ---.config.js?

[rayhanadev]

@EpicGamer007 to clarify, for this repo's configuration files (Babel, Rollup, Prettier, Eslint, etc.) not the package.