add dz65rgb (#5756)

* add dz68rgb

* Update dz68rgb.c

* Apply suggestions from code review

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Apply suggestions from code review

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Apply suggestions from code review

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Apply suggestions from code review

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Apply suggestions from code review

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Apply suggestions from code review

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Apply suggestions from code review

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Rename keyboards/dztech/dz68rgb/rules.mk to keyboards/dztech/dz65rgb/rules.mk

* Update and rename keyboards/dztech/dz68rgb/config.h to keyboards/dztech/dz65rgb/config.h

* Update and rename keyboards/dztech/dz68rgb/dz68rgb.c to keyboards/dztech/dz65rgb/dz65rgb.c

* Rename keyboards/dztech/dz68rgb/dz68rgb.h to keyboards/dztech/dz65rgb/dz65rgb.h

* Update and rename keyboards/dztech/dz68rgb/info.json to keyboards/dztech/dz65rgb/info.json

* Update readme.md

* Rename keyboards/dztech/dz68rgb/readme.md to keyboards/dztech/dz65rgb/readme.md

* Rename keyboards/dztech/dz68rgb/keymaps/default/keymap.c to keyboards/dztech/dz65rgb/keymaps/default/keymap.c

* Update dz65rgb.c

* Update readme.md

* Update keyboards/dztech/dz65rgb/keymaps/default/keymap.c

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>
* Update keyboards/dztech/dz65rgb/keymaps/default/keymap.c

Co-Authored-By: moyi4681 <moyi4681@users.noreply.github.com>