[Keyboard] HHKB Lite 2 (#9188)

* Initial commit for HHKB Lite 2

* Rearrange keymap

* Clean up config

* Fix pin assignments

* Code and filename cleanup

* Add README

* Apply suggestions from code review

Code cleanup

* Update keyboards/hhkb_lite_2/README.md

Documentation cleanup

* Change Vendor ID to unused

* One more LAYOUT

* Via keymap for HHKB Lite 2

* Remove redundant keymap.c

* Add README for Via keymap

* Fix vendorId for Via keymap

* Apply suggestions from code review

Cleanup based on review feedback

* Clean up via keymap makefile rules

* Switch to C keymap instead of JSON for Via layout

* Move bootmagic key config to main

Moved to main keyboard config to be shared by all keymaps.

* Address PR feedback

* Reformat config comments

* Format rules.mk comments

* Rename README -> readme

* Use `make` instead of `qmk` in examples

keyboards/hhkb_lite_2/keymaps/via/readme.md

@@ -0,0 +1,3 @@
+# Via-enabled keymap for HHKB Lite 2
+
+See https://caniusevia.com/