feat(karabiner): map equals + delete to forward delete
feat(karabiner): map equals + delete to forward delete

Neat idea, from:

https://karabiner-elements.pqrs.org/docs/json/typical-complex-modifications-examples/

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent