[Keyboard] 45-ATS (#10104)

* add ats folder

* fix duplicate matrix key

* fix matrix issues

* fix missing comma in info.json

* clean up info.json

* rm game layer toggle in via keymap

* update via keymap rules.mk

* Update info.json

* clear up layout graphics

* Apply suggestions from code review

* Update 45_ats.c

* Update 45_ats.h

* Update config.h

* Update config.h

* Update keyboards/45_ats/keymaps/default/config.h

* Update keymap.c

* Update keyboards/45_ats/keymaps/default/keymap.c

* Update keymap.c

* Update keyboards/45_ats/keymaps/via/keymap.c

* Apply suggestions from code review

* Update keyboards/45_ats/config.h

keyboards/45_ats/readme.md

@@ -0,0 +1,16 @@
+# 45-ATS 
+
+![45ats](https://i.imgur.com/Paqx5zGl.png)
+
+A Premium and Beautiful 45% (And-Then-Some) Keyboard. Concept and Design by [Abec13](https://www.reddit.com/user/abec13).
+
+- Keyboard Designer: [Abec13](https://reddit.com/u/abec13/)
+- Keyboard Maintainer: [The-Royal](https://github.com/the-royal)
+- Hardware Supported: 45-ATS v1.0 PCB
+- Hardware Availability: Through Group Buy - Dec. 2019
+
+Make example for this keyboard (after setting up your build environment):
+
+    make 45_ats: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).