- create config struct
- create config errors
- create macro struct

TODO create --config option for the file

* use a simple platform dependent config location `ProjectDir`

* deserialise from yaml
  iterate more on config format, maybe be more verbose?

* make keybinds a tuple struct
  same size as newtype, but makes impls easier to add

* merge optionally multiple keys for one keybinding
  easier configuration

Add key events documentation from termion to the README

Add a clean config option, which
makes zellij not look for a default
configuration file.

The default location is now correctly used again

…ig-file

…ig-file

Uses the default configuration for tests,
in order to not mess up test cases with
different configurations in the config file.