[FEATURE] Terraform support for ML commons plugin

[pberger514]

Is your feature request related to a problem?

Digging into the docs and repo, it looks to me like there's no way to create connectors or register models via terraform. These are the steps that are necessary to get a full neural search pipeline up via terraform, since creating a kNN index and a neural search ingestion pipeline (I believe) are already supported.

What solution would you like?

Some way to create and manage ML commons plugin resources via terraform, specifically connectors and model registration.

What alternatives have you considered?

None this would be a blocker for us for adoption of OpenSearch

Do you have any additional context?

None

[pberger514]

Duplicate of #178