Add new shortcut for opening file-browser

Author: magicDGS

docs/README.md

@@ -86,6 +86,7 @@ Provided shortcuts include (note that `❌` or `❓` indicates that the shortcut
 | `_FIND_REPLACE ` | Find and replace shortcut      | ⭐  | ⭐  | ⭐  |
 | `_HOME`          | Home key (shortcut in mac)     | ⭐  | ⭐  | ⭐  |
 | `_END`           | End key (shortcut in mac)      | ⭐  | ⭐  | ⭐  |
+| `_FILES`         | Open file browser              | ⭐  | ⭐  | ⭐  |
 | `_POWER`         | Power shortcut                 | ⭐  | ❌  | ⭐  |
 | `_SLEEP`         | Sleep shortcut                 | ⭐  | ❌  | ⭐  |
 | `_LOCK`          | Lock shortcut                  | ⭐  | ⭐  | ⭐  |

include/zmk-keymap-utils/shortcuts.h

@@ -20,6 +20,7 @@
   #define _W      LA
   #define _HOME   _C(LEFT)
   #define _END    _C(RIGHT)
+  #define _FILES  LS(LA(M))
   #define _EMOJI  LG(LC(SPACE))
 #else
   #define _C      LC
@@ -30,6 +31,7 @@
   #define _W      _C
   #define _HOME   HOME
   #define _END    END
+  #define _FILES  LG(E)
   #define _EMOJI  LG(DOT)
 #endif
 #define _SLEEP      C_SLEEP