[Keyboard] Add tsubasa keyboard (#19352)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: jack <0x6a73@protonmail.com>

keyboards/handwired/tsubasa/config.h

@@ -0,0 +1,36 @@
+/*
+Copyright 2021 @kuriatsu
+
+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/>.
+*/
+
+#pragma once
+#define MASTER_RIGHT
+
+#define RGB_DI_PIN D2
+#ifdef RGB_DI_PIN
+#    define RGBLED_NUM 12
+#    define RGBLIGHT_SPLIT
+#    define RGBLED_SPLIT {6, 6}
+#    define RGBLIGHT_HUE_STEP 8
+#    define RGBLIGHT_SAT_STEP 1
+#    define RGBLIGHT_VAL_STEP 1
+#    define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+#    define RGBLIGHT_EFFECT_BREATHING
+#    define RGBLIGHT_EFFECT_RAINBOW_MOOD
+#    define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+#endif
+
+#define SPLIT_WPM_ENABLE
+#define SPLIT_LAYER_STATE_ENABLE