feat: 支持达梦数据库查询

server/internal/db/dbm/dialect_mysql.go

@@ -181,3 +181,7 @@ func (md *MysqlDialect) GetTableRecord(tableName string, pageNum, pageSize int)
 func (md *MysqlDialect) WalkTableRecord(tableName string, walk func(record map[string]any, columns []string)) error {
 	return md.dc.WalkTableRecord(context.Background(), fmt.Sprintf("SELECT * FROM %s", tableName), walk)
 }
+
+func (pd *MysqlDialect) GetSchemas() ([]string, error) {
+	return nil, nil
+}