* feat: add backend support for custom metrics
* feat: fix python test
* feat: support custom metrics computation
* feat: updated tests for custom metrics
* feat: added dl support for min max of datetime
* feat: added is safe query check for query sampler
* feat: added support for custom metric computation in dl
* feat: added explicit addProper for pydantic model import fo Extra
* feat: added custom metric to returned obj
* feat: wrapped trino import in __init__
* feat: fix python linting
* feat: fix typing in 3.8
