[Keyboard] Add support for Drink Me (#8039)

* Add initial configuration and keymaps for Yatara Drink Me.

* Apply suggestions from code review

* Apply suggestions from code review

* Add transparent layers in VIA layout so there are four layers in total. Amend closing bracket indentation in keymap.c files.

keyboards/yatara/drink_me/keymaps/default/keymap.c

@@ -0,0 +1,10 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        LCTL(KC_Z),
+        LCTL(KC_X),
+        LCTL(KC_C),
+        LCTL(KC_V)
+    )
+};

keyboards/yatara/drink_me/keymaps/default/readme.md

@@ -0,0 +1,11 @@
+# Drink Me - Default layout
+
+> It was so long since she had been anything near the right size, that it felt quite strange at first; but she got used to it in a few minutes
+
+Common shortcut keys.
+
+![Drink Me - Default layout](https://i.imgur.com/JLEEhHk.png)
+
+```
+Undo, Cut, Copy, Paste
+```