Documentation: Guidance for DBAs

[cgillum]

The MSSQL backend for the Durable Task Framework, more than other storage providers, could benefit from documentation that is oriented towards database administrators or operators. Existing features like multitenancy, KEDA support, and co-residency with other applications are documented, but not in a central place. This issue tracks creating documentation that is targeted towards DBAs that covers best practices and how-to guides for all these topics in a more intentional way.