* Rename file
".d.ts" files are files that are automatically generated during compilation (in case option is set) and shouldn't be created manually.
* Export types and interfaces
* Add missing imports
* [Prettier] Add "prettier"
Makes the formatting of the code consistent.
By using the eslint-plugin-prettier formatting issues will be highlighted as a lint error.
These errors will be auto fixed by running "lint --fix" (which can be done automatically on file save)
* [Prettier] Add "prettier" - Fix formatting