Update item_db.txt

Hello I would like them to add the following buff these items
based in kRo
11551,Savory_Herb_Salad sc_start SC_STRFOOD,180000,1;
3분동안 STR + 1.

11552,Apple_Carrot_Salad sc_start SC_AGIFOOD,180000,1;
3분동안 AGI + 1.

11553,Casual_Stew sc_start SC_VITFOOD,180000,1;
3분동안 VIT + 1.

11554,Golden_Roasted_Apple sc_start SC_DEXFOOD,180000,1;
3분동안 DEX + 1.

thx
Merge pull request #16 from Rekiem/patch-1

Update item_db.txt