Copilot CLI in GH Actions without need for long lived tokens

### Describe the feature or problem you'd like to solve

Currently Copilot CLI setup in GH Action is equaly or more cumbersome as competitive AI CLIs

### Proposed solution

It'd be great to have availability of a default token similar to [GITHUB_TOKEN](https://docs.github.com/en/actions/concepts/security/github_token) by default in Actions - so that Copilot CLI would be readily usable.

Or alternatively - add and optional App, that upon installation brings in the token

### Example prompts or workflows

_No response_

### Additional context

Current situation leads ppl to store long lived tokens in their setups - which is security antipattern