[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/cheshire_cat/keymap.c

@@ -0,0 +1,10 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        KC_LEFT,
+        KC_DOWN,
+        KC_UP,
+        KC_RIGHT
+    )
+};

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

@@ -0,0 +1,13 @@
+# Drink Me - Cheshire Cat layout
+
+> ‘Would you tell me, please, which way I ought to go from here?’
+>
+> ‘That depends a good deal on where you want to get to,’ said the Cat.
+
+Cursor keys in VI layout.
+
+![Drink Me - Default layout](https://i.imgur.com/E4cScrK.png)
+
+```
+Left, Down, Up, Right
+```