adds engine adapter and passes incremental and engine to query adapter

[rudolfix]

Description

1. adds engine adapter callback to modify engine settings before connection is opened (hopefully fixes Add a TConnectionInitializer optional callback for sql_database and sql_table resources #1920)
2. allows to return a subquery for table adapter, adds example that fixes Support Multiple Timestamp Columns for Incremental Loading #2076
3. passes Incremental and Engine instances to query adapter callback
4. allows to return text query from engine adapter Add capability to create sql resources from queries #1997
5. arrow backend now infers not reflected columns from the data
6. supports custom account host for azure (Cannot configure dlt for Azure GovCloud #2073 ) and fixes various edge cases for abfss

[netlify]

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