Add Temporal Tables Retention Policy

[KarlJorgen]

It coulld be nice to add the possibility to add retention policy for all/specific historical tables.

https://docs.microsoft.com/en-us/sql/relational-databases/tables/manage-retention-of-historical-data-in-system-versioned-temporal-tables?view=sql-server-ver15#using-temporal-history-retention-policy-approach

[findulov]

This would be very useful to have in the future release, thanks for the suggestion.