Keyboard: Adds Fleuron v1.0 keyboard (#3571)

Keyboard: Adds Fleuron v1.0 keyboard (#3571)

* Adds Fleuron keyboard directory and default layout

* Adds Fleuron keyboard directory and default layout

* adds double zero macro, and updates to the new macro methodology

* adds raise and lower layers

* removes makefile from default layout, turns off mousekey, console, and command in rules.mk

* makes upper right key a bksp in default layout, adds .json layout file

* updates to default layout

* tweak default layout jusabit

* fix raise and lower switch case, and scoot a few keycodes around

* make changes for PR #3571

* fixing erros for PR #3571

* adds Dollartacos first custom keymap

* fixes for PR #3571