[Keymap] add miuni32:cassdelacruzmunoz (#10108)

* created keymap for miuni32:cassdelacruzmunoz

* add license headers

* fixed error

keyboards/miuni32/keymaps/cassdelacruzmunoz/readme.md

@@ -0,0 +1,19 @@
+# Cass de la Cruz-Munoz's keymap for Miuni32
+
+7 layers:
+
+* QUERTY
+* Layer access
+* Numberpad, navigation keys
+* Symbols
+* Function and media keys
+* Assorted command keys
+* MIDI keys
+
+![QUERTY](https://imgur.com/0B3Xl2D.png)
+![Layers](https://imgur.com/Rb9KRgL.png)
+![Numberpad & Navigation](https://imgur.com/psq5U5o.png)
+![Symbols](https://imgur.com/nbxOjCG.png)
+![Function & Media](https://imgur.com/AZe6Vib.png)
+![Commands](https://imgur.com/Pl0NYbw.png)
+![MIDI](https://imgur.com/c6BcDe2.png)