💥 Generalize extra debugging

Marlin/src/core/language.h

 #define STR_DEBUG_ERRORS                    "ERRORS"
 #define STR_DEBUG_DRYRUN                    "DRYRUN"
 #define STR_DEBUG_COMMUNICATION             "COMMUNICATION"
-#define STR_DEBUG_LEVELING                  "LEVELING"
+#define STR_DEBUG_DETAIL                    "DETAIL"
 
 #define STR_PRINTER_LOCKED                  "Printer locked! (Unlock with M511 or LCD)"
 #define STR_WRONG_PASSWORD                  "Incorrect Password"

Marlin/src/gcode/control/M111.cpp

   static PGMSTR(str_debug_8, STR_DEBUG_DRYRUN);
   static PGMSTR(str_debug_16, STR_DEBUG_COMMUNICATION);
   #if ENABLED(DEBUG_LEVELING_FEATURE)
-    static PGMSTR(str_debug_lvl, STR_DEBUG_LEVELING);
+    static PGMSTR(str_debug_detail, STR_DEBUG_DETAIL);
   #endif
 
   static PGM_P const debug_strings[] PROGMEM = {
     str_debug_1, str_debug_2, str_debug_4, str_debug_8, str_debug_16,
-    TERN_(DEBUG_LEVELING_FEATURE, str_debug_lvl)
+    TERN_(DEBUG_LEVELING_FEATURE, str_debug_detail)
   };
 
   SERIAL_ECHO_START();