[Keyboard] Initial commit for Prime_E w/ VIA config support (#5285)

* Initial Prime_E commit

* Via support for Prime_EXL

* Backlight testing

* update libs

* Clean up and addition of VIA compatibility.

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/primekb/prime_e/keymaps/default/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/primekb/prime_e/keymaps/default/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/primekb/prime_e/keymaps/default/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/handwired/prime_exl/keymaps/via/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* Update keyboards/primekb/prime_e/keymaps/default/keymap.c

Co-Authored-By: holtenc <holtenc@gmail.com>

* removed IS_COMMAND from config.h. updated GPIO commands

* clean up libs

keyboards/primekb/prime_e/keymaps/default/readme.md

@@ -0,0 +1,2 @@
+# The default keymap for Prime_E
+This is the default keymap for Prime_E.