[Feature]: Support Seqera Managed Identities 

### Feature Type

New Resource

### Seqera API Endpoint

/identies

### Feature Description

The ability to manage managed identities & credentials. 

### Use Case

Mirror UI . 

### Proposed Terraform Configuration

```terraform

```

### Alternatives Considered

_No response_

### Priority

Medium - Would improve workflow

### Additional Context

_No response_