[Keymap] Add vim-style keymap for lets split (#5399)

* initial commit

* initial commit

* fixed indents

* spelling, capitalization, and order.

* added dota mode keymap, removed old comments

* fixed default keymap always having tilde, instead of grave accent and tilde. Improved dota keymap.

* lower does not change backspace to delete anymore

* corrected pgup/pgdown

* changed period on lower from numpad dot to regular dot

* added colemak and dvorak

* made colemak/dvorak border keys consistent with querty

* updated to match current practices, added custom metakeys for dvorak and colemak

* added disclaimer about audio

* renamed to lowercase

* replaced include guards with #pragma once

Co-Authored-By: rileyweber13 <rileyw13@protonmail.com>

* removed unncessary include

Co-Authored-By: rileyweber13 <rileyw13@protonmail.com>

* removed defines included in core

Co-Authored-By: rileyweber13 <rileyw13@protonmail.com>

* replace defines with an enum, switched from custom function to set_single_persistent_default_layer

* removed ifndef/include/endif left over from previous build system

* removed unnecessary ifdef block

* updated soungs to work with set_single_persistent_default_layer

1 files changed, 39 insertions, 0 deletions

diff --git a/keyboards/lets_split/keymaps/vim-mode/config.h b/keyboards/lets_split/keymaps/vim-mode/config.h
new file mode 100644
index 000000000..25512a5c9
--- /dev/null
+++ b/keyboards/lets_split/keymaps/vim-mode/config.h
@@ -0,0 +1,39 @@
+/*
+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
+
+// comment the following lines if sounds are not desired
+#define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                              SONG(COLEMAK_SOUND), \
+                              SONG(DVORAK_SOUND) \
+                            }
+
+/* Use I2C or Serial, not both */
+
+#define USE_SERIAL
+// #define USE_I2C
+
+/* Select hand configuration */
+
+#define MASTER_LEFT
+// #define MASTER_RIGHT
+// #define EE_HANDS
+