[Keyboard] Add handwired keyboard "Tennie" (#5507)

* Add tennie

* Jacobs Functions

* Switch back to normal layout

* Remove define from old template

* Fix broken keymaps

* Correct style errors, add bootlite

* Update readmes. Rename test keymap

* Missed comma

* Switch rgb from init to post init

keyboards/handwired/tennie/keymaps/simple-numbpad/readme.md

@@ -0,0 +1,18 @@
+# Simple numberpad keymap
+
+This keymap is to test the soldering work of workshop participants. It can also be used as a simple base for a macropad keymap.
+```
+//         ┌────────┬────────┬────────┐
+
+                1   ,   2   ,    3    ,
+
+//    ├────────┼────────┼────────┼────────┼
+
+          4    ,   5    ,    6   ,    7   ,
+
+//    ├────────┼────────┼────────┼────────┼
+
+                8   ,    9   ,    0
+
+//         └────────┴────────┴────────┘
+```