Shopping List backend implementation

- Added creatorId to the grocery item in db and showed the name of the user that requested to add the new grocery

hooks/firebase/types/groceryData.ts

@@ -9,4 +9,5 @@ export interface IGrocery {
     frequency: GroceryFrequency;
     bought: boolean;
     familyId?: string,
+    creatorId?: string
 }