[Keyboard] Palette1202 (#7736)

* added Palette1202

* removed currently unused cords

* Update keyboards/palette1202/config.h

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Apply suggestions from code review

Co-Authored-By: Drashna Jaelre <drashna@live.com>
Co-Authored-By: James Young <18669334+noroadsleft@users.noreply.github.com>

* Update readme.md

removed unnecessary horizontal line from readme.md

* Update readme.md

Fixed style, make command example

* Removed spaces

* removed unused config.h

* fixed defines

* fixed send string on rotate encoder

* fixed layer numbers for OLED Display

* fixed to use existing function to set default layer

https://github.com/qmk/qmk_firmware/pull/7736#discussion_r366699616

* flipped rotary encoder directions

* Added layer for Clip studio on iOS

* Update keyboards/palette1202/rules.mk

Co-Authored-By: Ryan <fauxpark@gmail.com>

* Update keyboards/palette1202/lib/oled_helper.h

Co-Authored-By: James Young <18669334+noroadsleft@users.noreply.github.com>

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/palette1202/keymaps/default/readme.md

@@ -0,0 +1 @@
+# The default keymap for Palette1202