parse error type and category them to show information clearly

[sn0wfree]

when execute a sql or query, received a error code from server and show correspond information. no general database error!

>>> ch('show database')

>>> DatabaseError: b"Code: 62, e.displayText() = DB::Exception: Syntax error: failed at position 6 ('database'): database format JSONCompact. Expected one of: TABLES, GRANTS, CREATE, ACCESS, QUOTA, CURRENT ROLES, PRIVILEGES, PROCESSLIST, CURRENT QUOTA, ENABLED ROLES, CREATE, DICTIONARIES, QUOTAS, ROW POLICIES, POLICIES, SETTINGS PROFILES, PROFILES, ROLES, USERS (version 20.9.3.45 (official build))\n"

change to

>>> ch('show database')

>>> SyntaxError: b"Code: 62, e.displayText() = DB::Exception: Syntax error: failed at position 6 ('database'): database format JSONCompact. Expected one of: TABLES, GRANTS, CREATE, ACCESS, QUOTA, CURRENT ROLES, PRIVILEGES, PROCESSLIST, CURRENT QUOTA, ENABLED ROLES, CREATE, DICTIONARIES, QUOTAS, ROW POLICIES, POLICIES, SETTINGS PROFILES, PROFILES, ROLES, USERS (version 20.9.3.45 (official build))\n"