Add EEPROM_RESET keycode to core code (#4234)

* Add EEPROM Reset keycode

* Add keycode to docs

* Move EEPROM Reset code to the end of the enum

* Cleanup and naming change

docs/quantum_keycodes.md

@@ -9,9 +9,10 @@ On this page we have documented keycodes between `0x00FF` and `0xFFFF` which are
 ## QMK Keycodes
 
 |Key            |Aliases    |Description                                                          |
-|-------------|-----------|---------------------------------------------------------------------|
+|---------------|-----------|---------------------------------------------------------------------|
 |`RESET`        |           |Put the keyboard into DFU mode for flashing                          |
 |`DEBUG`        |           |Toggle debug mode                                                    |
+|`EEPROM_RESET` |`EEP_RST`  |Resets EEPROM state by reinitializing it                             |
 |`KC_GESC`      |`GRAVE_ESC`|Escape when tapped, <code>&#96;</code> when pressed with Shift or GUI|
 |`KC_LSPO`      |           |Left Shift when held, `(` when tapped                                |
 |`KC_RSPC`      |           |Right Shift when held, `)` when tapped                               |
@@ -19,4 +20,4 @@ On this page we have documented keycodes between `0x00FF` and `0xFFFF` which are
 |`KC_LOCK`      |           |The [Lock key](feature_key_lock.md)                                  |
 |`FUNC(n)`      |`F(n)`     |Call `fn_action(n)` (deprecated)                                     |
 |`M(n)`         |           |Call macro `n`                                                       |
-|`MACROTAP(n)`|           |Macro-tap `n` idk FIXME                                              |
+|`MACROTAP(n)`  |           |Macro-tap `n` idk FIXME                                              |

quantum/quantum.c

@@ -298,6 +298,11 @@ bool process_record_quantum(keyrecord_t *record) {
           print("DEBUG: enabled.\n");
       }
     return false;
+    case EEPROM_RESET:
+      if (record->event.pressed) {
+          eeconfig_init();
+      }
+    return false;
   #ifdef FAUXCLICKY_ENABLE
   case FC_TOG:
     if (record->event.pressed) {

quantum/quantum_keycodes.h

@@ -454,6 +454,8 @@ enum quantum_keycodes {
     TERM_OFF,
 #endif
 
+    EEPROM_RESET,
+
     // always leave at the end
     SAFE_RANGE
 };
@@ -569,6 +571,8 @@ enum quantum_keycodes {
 
 #define KC_GESC GRAVE_ESC
 
+#define EEP_RST EEPROM_RESET
+
 #define CK_TOGG CLICKY_TOGGLE
 #define CK_RST CLICKY_RESET
 #define CK_UP CLICKY_UP