MSSQL support in ORM

[WY-CGhilardi]

Is your feature request related to a problem? Please describe.
Hello, I have been experimenting with drogon and enjoying the library!

I want to connect to a Microsoft SQL Server database as part of a REST API.
Is there any info for required methods that would need to be added to a potential new MSSQLImpl ?
I searched both issues and pull requests but did not see MSSQL mentioned before.

Describe the solution you'd like
A way to connect and interact with MSSQL databases similar to how postgres and sqlite are handled

Describe alternatives you've considered
I can potentially write and manage an external script/library to handle the database I/O myself outside of my drogon work.

Alternatively, a more generic ODBC ORM handler might work as well and a user can use the ODBC Driver 17 For SQL Server .

Additional context
Some Microsoft documentation around ODBC access