Surrealist

- code attribute of a result is now containing http status code or error code for websocket
- SHOW CHANGES uses current date-time if not specified, because SHOW does not work without SINCE
- fix live queries url links
- live query for QL is now can use VALUE and custom query
- DEFINE TABLE now can use TYPE and INCLUDE ORIGINAL
- minor improvements for documentation, examples and tests

- increment default timeout to 15 seconds
- minor improvements for documentation

minor improvements for documentation and tests

create DatabaseConnectionsPool for use at a high load

Refer to: https://github.com/kotolex/surrealist?tab=readme-ov-file#connections-pool