Converted mercenary_db to YAML format (#6101)

* Converts the Mercenary Tables file into YAML.
* Includes CSV2YAML converter.
* Fixed mercenary name not properly displayed after moving

Co-authored-by: Aleos <aleos89@users.noreply.github.com>
Co-authored-by: Lemongrass3110 <lemongrass@kstp.at>

src/map/map.cpp

@@ -2239,7 +2239,7 @@ struct homun_data* map_id2hd(int id){
 	return BL_CAST(BL_HOM, bl);
 }
 
-struct mercenary_data* map_id2mc(int id){
+struct s_mercenary_data* map_id2mc(int id){
 	struct block_list* bl = map_id2bl(id);
 	return BL_CAST(BL_MER, bl);
 }