Dubba175 (#12077)

* dubba175 initial

* Following checklist

* Update readme.md

* Update keyboards/dubba175/keymaps/default/keymap.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/dubba175/keymaps/default/keymap.c

Co-authored-by: ridingqwerty <george.g.koenig@gmail.com>

* Update keyboards/dubba175/keymaps/default/keymap.c

Co-authored-by: ridingqwerty <george.g.koenig@gmail.com>

* Update keyboards/dubba175/rules.mk

Co-authored-by: ridingqwerty <george.g.koenig@gmail.com>

* Update config.h

* Update keyboards/dubba175/readme.md

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/dubba175/rules.mk

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/dubba175/rules.mk

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: ridingqwerty <george.g.koenig@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/dubba175/readme.md

@@ -0,0 +1,15 @@
+# Dubba175
+
+![Dubba175](https://i.imgur.com/nzDZuS3h.jpg)
+
+Dubba175 is a 10u wide ortholinear keyboard featuring 2x 1.75u spacebars as the bottom row layout option.   
+
+* Keyboard Maintainer: [H. Bond](https://github.com/drhigsby)
+* Hardware Supported: Dubba175 (https://github.com/drhigsby/dubba175)
+* Hardware Availability: P3DStore.com offers a stacked acrlyic case / make your own
+
+Make example for this keyboard (after setting up your build environment):
+
+    make dubba175: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).