Create parse functionality for commands

[a-camarillo]

Need functionality for determining the custom commands and their associated key.

[HamedHaghani]

Hi, would you please Assign this issue to me?

[jwu910]

In reference to #555 (comment)

@a-camarillo do you have context on what the definition of done would be for this issue? I see the parent issue linked here now as well. I don't remember much from conversations we may have had about this feature, but if you have any insight on how you planned for this to be implemented, I think that discussion could be had here

/CC @HamedHaghani

[drewbrokke]

Hey all, please let me know if I can assist at all. I won't be able to implement, but I'll be happy to provide ideas and point to examples from my implementation of this feature in https://github.com/drewbrokke/jack-cli.