fix(hooks): Fix delete hook return type to allow chaining

Author: vincentdesmares

src/tests/schema.ts

@@ -241,7 +241,7 @@ graphqlSchemaDeclaration.user = {
           updatedAt: date,
         })
       }
-      return
+      return deletedEntity
     },
   },
 } as ModelDeclarationType<User, TestContext>

src/types/types.d.ts

@@ -340,7 +340,7 @@ export type DeleteAfterHook<M extends Model<any>, TContext = any> = (params: {
   args: any
   context: TContext
   info: any
-}) => Promise<void> | void
+}) => Promise<M> | M
 
 // This type is made to ease the developer experience when using a GSG Hook.
 // Having less configuration scenarios reduce the potential sources of bugs and improve readability.