[Keyboard] VIA Support for Boardwalk (#8124)

* initial commit of VIA Support

* update PRODUCT (and MANUFACTURER) per VIA docs

Reference: https://caniusevia.com/docs/configuring_qmk#change-product

Updated MANUFACTURER so it matches what the PRODUCT says.

* enable Link Time Optimization per mechmerlin

* revert change to USB Product Name

* add two empty layers to via keymap

VIA keymaps need four layers in flash.

* correct the layer indexes

Start from 0, not 1.

0 files changed, 0 insertions, 0 deletions