[keyboard] adding keyboard: jerkin (#7975)
* jerkin
* Update config.h
* Apply suggestions from code review
Co-Authored-By: Drashna Jaelre <drashna@live.com>
Co-Authored-By: Akaash Suresh <casa.akaash@gmail.com>
* Update rules.mk
* Apply suggestions from code review
* Missing closing parenthesis in one of the suggestions.
* Finalize collaborator suggestions
* One final tweak to standardize MANUFACTURER
Co-authored-by: ridingqwerty <george.g.koenig@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Akaash Suresh <casa.akaash@gmail.com>
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