Added backlight support, renamed "via" folder to "vial" (#35)

* Increased layer count (due to increased EEPROM emulation size in Vial 0.4)

* Added backlights support, renamed "via" folder to "vial"

* Revert "Added backlights support, renamed "via" folder to "vial""

This reverts commit da4497235be63c1aca900e11ebdefd7f166adfc6.

* Added backlight support, renamed "via" folder to "vial"

Co-authored-by: bluepylons <jwang@fluentbio.com>

keyboards/boston/keymaps/vial/vial.json

@@ -6,6 +6,7 @@
         "rows": 7,
         "cols": 19
     },
+    "lighting": "qmk_backlight",
     "layouts": {
         "labels":[
                     [