orm: enforce that queries always return a Result, a query-resulting array can be used as a V array in place. (#17871)

examples/vweb_fullstack/src/auth_services.v

@@ -36,7 +36,7 @@ fn (mut app App) service_auth(username string, password string) !string {
 
 	users := sql db {
 		select from User where username == username
-	}
+	}!
 	user := users.first()
 	if user.username != username {
 		return error('user not found')

examples/vweb_fullstack/src/product_service.v

@@ -37,7 +37,7 @@ fn (mut app App) service_get_all_products_from(user_id int) ![]Product {
 
 	results := sql db {
 		select from Product where user_id == user_id
-	}
+	}!
 
 	return results
 }

examples/vweb_fullstack/src/user_services.v

@@ -42,7 +42,7 @@ fn (mut app App) service_get_all_user() ![]User {
 
 	results := sql db {
 		select from User
-	}
+	}!
 
 	return results
 }
@@ -59,7 +59,7 @@ fn (mut app App) service_get_user(id int) !User {
 
 	results := sql db {
 		select from User where id == id
-	}
+	}!
 
 	return results.first()
 }