Expanded script command addrid

* Added another option to attach players based on a specified map.
* As suggested in https://rathena.org/board/topic/88331-addrid-addition/ and  https://rathena.org/board/topic/103478-addrid-map-support/

doc/script_commands.txt

@@ -3783,6 +3783,8 @@ invoking RID. It returns 1 if successful and 0 upon failure.
     [ Parameters: <guild id> ]
  4: All players in a specified area of the map of the invoking player (or NPC).
     [ Parameters: <x0>,<y0>,<x1>,<y1> ]
+ 5: All players in the map.
+    [ Parameters: "<map name>" ]
  Account ID: If type is Account ID, attach the specified account ID.
 
 <flag> can prevent certain players from being attached:

src/map/script.c

@@ -11574,6 +11574,8 @@ static void script_detach_rid(struct script_state* st)
  *	    [ Parameters: <guild id> ]
  *	4 : All players in a specified area of the map of the invoking player (or NPC).
  *	    [ Parameters: <x0>,<y0>,<x1>,<y1> ]
+ *	5 : All players in the map.
+ *	    [ Parameters: "<map name>" ]
  *	Account ID: The specified account ID.
  * <flag>:
  *	0 : Players are always attached. (default)
@@ -11649,6 +11651,17 @@ BUILDIN_FUNC(addrid)
 			bl->m,script_getnum(st,4),script_getnum(st,5),script_getnum(st,6),script_getnum(st,7),BL_PC,
 			st,script_getnum(st,3));//4-x0 , 5-y0 , 6-x1, 7-y1
 			break;
+		case 5:
+			if (script_getstr(st, 4) == NULL) {
+				script_pushint(st, 0);
+				return SCRIPT_CMD_FAILURE;
+			}
+			if (map_mapname2mapid(script_getstr(st, 4)) < 0) {
+				script_pushint(st, 0);
+				return SCRIPT_CMD_FAILURE;
+			}
+			map_foreachinmap(buildin_addrid_sub, map_mapname2mapid(script_getstr(st, 4)), BL_PC, st, script_getnum(st, 3));
+			break;
 		default:
 			if((map_id2sd(script_getnum(st,2))) == NULL) { // Player not found.
 				script_pushint(st,0);