Feature request

We have to add support for SQL Server as a first-class resource in the Materialize Terraform provider by introducing two new resources:

• materialize_connection_sqlserver
• materialize_source_sqlserver

This aligns with the native SQL Server support now available in Materialize:

https://materialize.com/docs/ingest-data/sql-server/

Tasks:

• Implement materialize_connection_sqlserver resource
• Implement materialize_source_sqlserver resource
• Add unit tests for both resources
• Add integration tests
• Add acceptance tests
• Update provider documentation and examples

Motivation:

Materialize now supports ingesting data from Microsoft SQL Server using CDC. Adding Terraform support will let users declaratively configure SQL Server connections and sources like they can with PostgreSQL and MySQL.

References:

• https://materialize.com/docs/ingest-data/sql-server/
• Related: materialize_connection_postgres, materialize_source_postgres and same for MySQL

Note: Keep in mind the #693 PR as well and how things might be connected.