The Gitlab provider does not support the parameter oauthScopes

[mrumpf]

Feature description

The token scopes for the Gitlab provider are hard-coded in the source code: read_repository & write_repository.
I would like to use the token, created by GCM, also for Maven dependency resolution via the package registry API (in a Gradle Kotlin Script).
This is only possible if you request a token with the scopes "api" or "read_api".
Unfortunately the gitlab provider does not allow to override the scopes with the credential.oauthScopes property, defined by GCM.

The Scope parameter is read by GCM (TryGet "oauthScopes"), but not used when requesting the token. Therefore the token can only be used to perform Git operations.

[mrumpf]

As a workaround, the list of hard-coded scopes could simply be extended by "read_api":

git-credential-manager/src/shared/GitLab/GitLabHostProvider.cs

Line 17 in 2e505a6

"read_repository"