Get Team By Name implementation

[dylan-asos]

Resolves #2716

Introduces a new method that allows using the API endpoint to get a team by slug name. In certain integration scenarios, other systems might know a team name that's common between systems, but not know the GitHub ID. This allows retrieving a team instance from the API without needing to work out the ID first.

Behaviour

Before the change?

NA - new feature

After the change?

New method on Teams Client that supports getting a team by slug name

Other information

It's the callers responsibility to provide the appropriately formed team slug name to the method, this PR provides no functionality to achieve that.

Whilst there are rules for forming the slug (all lower case, spaces replaced by hyphens, special chars removed etc) this is non-deterministic depending on the state of the organisation ( for example if there are multiple teams with the same name in an org), and therefore cannot be reliably implemented in a client SDK.

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Additional info

Pull request checklist

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Added the appropriate label for the given change

Does this introduce a breaking change?

Please see our docs on breaking changes to help!

• Yes (Please add the Type: Breaking change label)
• No

If Yes, what's the impact:

• N/A

Pull request type

Please add the corresponding label for change this PR introduces:

• Feature/model/API additions: Type: Feature

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[kfcampbell]

Thank you for contributing!