1734 adding config and maintenance window

[thomasyopes]

Ref: #1734

Dependencies

• Downstream: https://github.com/metriport/metriport-internal/pull/1753

Description

• Adding config + maintenance window

Release Plan

• Merge this

[leite08]

• ticket number on the description w/ link to the actual ticket, so GH can link them (creates a record on the ticket itself)
• the dependency is upstream to this one, i.e., this PR can only be merged when the dependency is merged too
• release plan to indicate merging upstream and then this one

[leite08]

@thomasyopes I just realized the FHIRServer's configs are not pointing to internal! 🤦

See how it should look like (OSS): https://github.com/metriport/metriport/tree/develop/packages/infra/config

How it looks like on this repo: https://github.com/metriport/fhir-server/tree/develop/infra/config

Let's add a fix for this as part of this PR?

There'll be still something outstanding, which is to make CICD to use those configs, so we don't need them b64'd on GH secrets, like we do for OSS: https://github.com/metriport/metriport-internal/issues/1760