Add MSSQL connector to Trino

[ThanePi]

This task expect Trino to have additional connection as source database (while still connecting with OMOP database of PostgreSQL).

[ThanePi]

Backlog:

• Tried to setup external MSSQL Server, simulated as production warehouse of EMR.
• Worked on multiple Trino connector configuration.
• Doesn't work because of network issue
  • Currently the progress was blocked by #15

[ThanePi]

As #15 was solved, now this task back in progress

[ThanePi]

Backlog (6 July 2023):

• Finished on add SQL Server connection to Trino as a second DB.
• Now dbt can successfully reach Trino connecting to SQL Server.
• Config pattern possible hardcoded by each choice of user's DB engine.
  • Concerned about remove pre-setup source DB connection into repo or completely conduct seamless encrypted connection config.
  • Exampled: As connection URL attack on host address https://github.com/sidataplus/omop-core/blob/e3618d77e38e1713a4d06606373e43e864f4211c/podman/.env#L8
• Opportunity involved in security practice for .Dockerfile (podman) secret management.
  • Involved as https://github.com/sidataplus/omop-core/issues/16

[ThanePi]

Minor change https://github.com/sidataplus/omop-core/commit/1eed26291c3acaec81f5712d1357cbd74d22155d:

• Now source DB config changed to template file.
• User need to manually config their source DB config from template file.
• Documentation should be mandatory.

[ThanePi]

Closed by #17