Add typings

[MrKomodoDragon]

This will help support autocompletion, so this should be done.

[jay3332]

Typings will eventually be added. For now, types are specified in the documentation

[Cats3153]

maybe .d.ts files? not too sure about typing

[Cats3153]

being worked on 👌

[Cats3153]

typescript rewrite is planned, current version is partially typed