Add `Cap:RUNOUT`

Co-Authored-By: Julius ter Pelkwijk <mrseeker@users.noreply.github.com>

Marlin/src/gcode/host/M115.cpp

@@ -77,6 +77,9 @@ void GcodeSuite::M115() {
     // AUTOLEVEL (G29)
     cap_line(PSTR("AUTOLEVEL"), ENABLED(HAS_AUTOLEVEL));
 
+    // RUNOUT (M412, M600)
+    cap_line(PSTR("RUNOUT"), ENABLED(FILAMENT_RUNOUT_SENSOR));
+
     // Z_PROBE (G30)
     cap_line(PSTR("Z_PROBE"), ENABLED(HAS_BED_PROBE));
 
@@ -89,9 +92,8 @@ void GcodeSuite::M115() {
     // SOFTWARE_POWER (M80, M81)
     cap_line(PSTR("SOFTWARE_POWER"), ENABLED(PSU_CONTROL));
 
-    // CASE LIGHTS (M355)
+    // TOGGLE_LIGHTS (M355)
     cap_line(PSTR("TOGGLE_LIGHTS"), ENABLED(HAS_CASE_LIGHT));
-
     cap_line(PSTR("CASE_LIGHT_BRIGHTNESS"), TERN0(HAS_CASE_LIGHT, PWM_PIN(CASE_LIGHT_PIN)));
 
     // EMERGENCY_PARSER (M108, M112, M410, M876)