Lint setup: Prettier config

[AntonyGarand]

2 changes:

1. Setup prettier, linting tool, and its config. It uses Husky to auto-lint committed file so everything should be automated now.
2. Executed prettier so all files up to this point are properly formatted

To view the non-lint changes, have a look at the first commit, the second one is only space changes

[dennisdev]

Looks good to me Thanks for contributing this