Keymap: share my ortho_4x12 layout symbolic (#3833)

* add ortho_4x12 symbolic layout

* delete trash

* modify little bit

* fixed doesn't requires

replace `#ifndef ... #endif` to `#pragma ones` in config.h
delete `QMK_KEYBOARD_CONFIG_H` in config.h
delete `action_layer.h` and `eeconfig.h` in keymap.c

layouts/community/ortho_4x12/symbolic/config.h

@@ -0,0 +1,47 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+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
+
+// prevent stuck modifiers
+#define PREVENT_STUCK_MODIFIERS
+
+
+// hold & tapping delay setting
+#define TAPPING_TERM 100
+
+/* Use I2C or Serial, not both */
+
+#define USE_SERIAL
+// #define USE_I2C
+
+/* Select hand configuration */
+
+//#define MASTER_LEFT
+// #define MASTER_RIGHT
+#define EE_HANDS
+
+#ifdef AUDIO_ENABLE
+  #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                SONG(DVORAK_SOUND), \
+                                SONG(COLEMAK_SOUND) \
+                              }
+#endif
+