[Keymap] VIA keymap for the Sofle (#10446)

* Added via support

* Now uses LTO_ENABLE

* Deactivated console to save space

* Update keyboards/sofle/keymaps/via/readme.md

* Added GPL license

* Update keyboards/sofle/keymaps/via/keymap.c

* Update keyboards/sofle/keymaps/via/keymap.c

* Update keyboards/sofle/keymaps/via/keymap.c

* Update keyboards/sofle/keymaps/via/keymap.c

keyboards/sofle/keymaps/via/config.h

@@ -0,0 +1,29 @@
+ /* Copyright 2020 Josef Adamcik
+  * Modification for VIA support and RGB underglow by Jens Bonk-Wiltfang
+  * 
+  * 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
+
+/* The way how "handedness" is decided (which half is which),
+see https://docs.qmk.fm/#/feature_split_keyboard?id=setting-handedness
+for more options.
+*/
+
+//Add RGB underglow
+#define RGB_DI_PIN D3
+#define RGBLED_NUM 14
+#define RGBLED_SPLIT {7,7}
+#define RGBLIGHT_ANIMATIONS