[Core feature] Implement GetProject endpoint in FlyteAdmin

[RRap0so]

Motivation: Why do you think this is important?

We have several services and operators that fetch single Project objects from flyteadmin. This new endpoint will save some filtering by only fetching the one we need instead of fetching a List of Projects (the endpoint available today)

Goal: What should the final outcome look like, ideally?

We have a GetProject endpoint where we can pass a project ID and returns a project object.

Describe alternatives you've considered

None

Propose: Link/Inline OR Additional context

There's a PR that implements this new feature: https://github.com/flyteorg/flyte/pull/4316

Are you sure this issue hasn't been raised already?

• [X] Yes

Have you read the Code of Conduct?

• [X] Yes