initial add S20 keyboard into polycarbdiet folder (#11865)

keyboards/polycarbdiet/s20/config.h

@@ -0,0 +1,61 @@
+/* Copyright 2020 Muhammad Galib (polycarbdiet) <pd.keyboards@gmail.com>
+
+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
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID    0x5040 // PD = polycarbdiet
+#define PRODUCT_ID   0x7320 // S20
+#define DEVICE_VER   0x0001
+#define MANUFACTURER polycarbdiet
+#define PRODUCT      S20
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 4
+
+//                         1   2   3   4   5
+#define MATRIX_ROW_PINS { B7, E6, D0, D1, D5 }
+#define MATRIX_COL_PINS { C6, C7, D4, D6 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL */
+#define DIODE_DIRECTION ROW2COL
+
+#define BACKLIGHT_PIN B6
+#define BACKLIGHT_LEVELS 3
+#define BACKLIGHT_BREATHING
+
+#define RGB_DI_PIN B3
+#define RGBLED_NUM 4
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+#define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+#define RGBLIGHT_SLEEP  /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+
+#define RGBLIGHT_ANIMATIONS
+
+#define DEBOUNCE 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+#define FORCE_NKRO