Validating Token Capabilities and Permissions against GitHub

[UlisesGascon]

We want to create a new function to help us validate token capabilities.

The idea is to check that we have the right level of permissions for a given entity (for example, verifying permissions against specific organizations during checks). As an example:

curl -I -H "Authorization: token TOKEN" https://api.github.com/user/memberships/orgs/expressjs

This request can return 200 (with the detail level shown in the X-OAuth-Scopes header) or 404 if the token lacks access.

Additionally, we need to extend the configuration (index.js) to list the permission levels required by VisionBoard. This will ensure:

• Our documentation aligns with the permission requirements for these checks.
• Users can verify whether their current token has sufficient permissions to perform the necessary checks.

This new function will replace the current use of ensureGithubToken within the providers file (index.js).

Instead, ensureGithubToken will be called internally as part of the execution of this new function.