Adding Opus keyboard (#10628)

* Adding opus keyboard

* Preparing keyboard for PR

* Adding images to default keymap readme

* Changing VENDOR_ID

* Minor changes

* Changing PRODUCT_ID

* Removing comment

* Fixing tap dance issue

* #pragma once instead of #ifndef

* Resolving PR suggestions

* Removing ifndef

* Using lower resolution image

* Formatting comments

* Adjusting copyright year

Co-authored-by: Raleigh Wayland <raleigh.wayland@stormapp.com>

keyboards/opus/keymaps/default/readme.md

@@ -0,0 +1,17 @@
+# The default keymap for Opus
+
+## Base Layer
+
+![opus base layer](https://i.imgur.com/zsmlS96.png)
+
+## Symbol Layer
+
+![opus symbol layer](https://i.imgur.com/Fu10HBx.jpg)
+
+## Num Layer
+
+![opus num layer](https://i.imgur.com/1hvYqi0.jpg)
+
+## Nav Layer
+
+![opus nav layer](https://i.imgur.com/JqOdXhG.jpg)