[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/via/keymap.c

@@ -0,0 +1,28 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        KC_0,
+        KC_1,
+        KC_2,
+        KC_3
+    ),
+    [1] = LAYOUT(
+        KC_TRNS,
+        KC_TRNS,
+        KC_TRNS,
+        KC_TRNS
+    ),
+    [2] = LAYOUT(
+        KC_TRNS,
+        KC_TRNS,
+        KC_TRNS,
+        KC_TRNS
+    ),
+    [3] = LAYOUT(
+        KC_TRNS,
+        KC_TRNS,
+        KC_TRNS,
+        KC_TRNS
+    )
+};

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

@@ -0,0 +1,7 @@
+# Drink Me - VIA layout
+
+> ‘But what am I to do?’ said Alice.
+>
+> ‘Anything you like,’ said the Footman, and began whistling.
+
+Flash with this layout to use [VIA](https://caniusevia.com/) for customising layout.

keyboards/yatara/drink_me/keymaps/via/rules.mk

@@ -0,0 +1,2 @@
+EXTRAKEY_ENABLE = yes
+VIA_ENABLE = yes