[Keyboard] Doppelganger (#7682)
* Initial commit
* Update info.json
* Update doppelganger.c
* Update keyboards/doppelganger/readme.md
* Update keyboards/doppelganger/readme.md
* Update keyboards/doppelganger/readme.md
* Update keyboards/doppelganger/rules.mk
* Update keyboards/doppelganger/rules.mk
* Update keyboards/doppelganger/rules.mk
* Update keyboards/doppelganger/rules.mk
* More fixes my g:)
* Update keyboards/doppelganger/rules.mk
* Update keyboards/doppelganger/rules.mk
* More prettying
* Update rules.mk
* Minor spacing
* Init pins
* Update rules.mk
* Update keyboards/doppelganger/info.json