orm: add != (#9600)

vlib/orm/orm_test.v

@@ -32,6 +32,11 @@ fn test_orm_sqlite() {
 	db.exec("insert into User (name, age) values ('Peter', 31)")
 	db.exec("insert into User (name, age, is_customer) values ('Kate', 30, 1)")
 
+	c := sql db {
+		select count from User where id != 1
+	}
+	assert c == 2
+
 	nr_all_users := sql db {
 		select count from User
 	}