Hyfetch

<img width="200px" src="https://user-images.githubusercontent.com/22280294/180901539-014f036e-c926-4470-ac72-a6d6dcf30672.png" align="right">

* Refactored a lot of things
* Added Beiyang flag xD
* Added interactive configurator for brightness adjustment
* Added dark/light mode selection
* Added color bar preview for RGB/8bit mode selection
* Added random color arrangement feature (for NixOS)

* Fix: Make config path not on init but when it's actually needed.

* Remove `hypy_utils` dependency to make packaging easier.

* Fix terminal emulator detection ([PR 2](https://github.com/hykilpikonna/hyfetch/pull/2))

* Add more flags ([PR 1](https://github.com/hykilpikonna/hyfetch/pull/1))

* Fix missing dependency for setuptools