[Keyboard] Add cKeys Washington keyboard (#7570)

* Add cKeys Washington keyboard

* Add suggested changes

* Fix encoder direction

* Remove unneeded file

* Update config.h

* Update washington.c

1 files changed, 23 insertions, 0 deletions

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+# Washington Macropad
+
+![Washington board](https://keypcb.xyz/Content/resources/washington-done.png)
+
+A macropad shaped like Washington State that supports a rotary encoder and an OLED display.
+
+* Keyboard Maintainer: [merlin04/KeyPCB](https://github.com/merlin04)
+* Hardware Supported: Washington Macropad
+* Hardware Availability: [cKeys.org](https://ckeys.org)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make ckeys/washington:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## PCB Design
+
+Download the files for the PCB [here.](https://keypcb.xyz/ViewPage/Washington#files)
+
+## Default Layout
+
+You can find the default layout in `washington/keymaps/default/keymap.c`