[Keyboard] Botanical Keyboards FM2U (#8819)

* initial commit for fm2u keyboard

* add fm2u keyboard along with VIA keymap

* add meme LAYOUT support

* minor cleanups

* fixup layout macro names

keyboards/botanicalkeyboards/fm2u/keymaps/via/keymap.c

@@ -0,0 +1,37 @@
+/* Copyright 2020 mechmerlin
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base */
+    [0] = LAYOUT_100u(
+        KC_B
+    ),
+
+    [1] = LAYOUT_100u(
+        KC_TRNS
+    ),
+
+    [2] = LAYOUT_100u(
+        KC_TRNS
+    ),
+
+    [3] = LAYOUT_100u(
+        KC_TRNS
+    ),
+};
+

keyboards/botanicalkeyboards/fm2u/keymaps/via/rules.mk

@@ -0,0 +1,4 @@
+VIA_ENABLE = yes
+LTO_ENABLE = yes
+
+EXTRAKEY_ENABLE = no