mie: add support for adding traits to types and ops

mie/ir/op-definition.c

@@ -17,9 +17,16 @@ struct mie_op_definition *mie_op_definition_create(
 	}
 
 	out->op_parent = parent;
+	mie_trait_table_init(&out->op_traits);
 
 	b_rope name_rope = B_ROPE_CSTR(name);
 	mie_id_map_put(&parent->d_ops, &out->op_id, &name_rope);
 
 	return out;
 }
+
+enum mie_status mie_op_definition_add_trait(
+	struct mie_op_definition *op, const struct mie_trait *trait)
+{
+	return mie_trait_table_put(&op->op_traits, trait);
+}