Extend the powerplatform_enterprise_policy to include the policy type "Identity"

[mwebster5589]

User Story

As a Power Platform administrator, I want to manage identity enterprise policies through Terraform so that I can follow the same process/practice as I would network injection and encryption policies.

Use case: We are able to manage network injection and encryption policies natively through Terraform. For identity policies, we will need to manage them in a different manner.

Definition of Done

• Data Transfer Objects (dtos) in dto.go
• Resource Model in model.go
• API Client functions in api_{name}.go
• Resource Implementation in resource_{name}.go
• Unit Tests in resource_{name}_test.go for Happy Path, Error conditions, boundry cases
• Acceptance Tests in resource_{name}_test.go for Happy Path
• Resource Added to provider.go and provider_test.go
• Example in the /examples folder
• Schema documented using MarkdownDescription
• Change log entry changie new -k added
• Run make precommit before PR

See the contributing guide for more information about what's expected for contributions.

[mawasile]

Thanks for writing this up. I will have to check (again) but as far as I remeber, for this policy we did not had service principal authentication path working (yet). I will check that and cone back to you. Either way, I will add that to the backlog.