Allow consumers to set their own token expiry time

Problem/Motivation

To allow consumers to set their own token expiry. This also allows simple_oauth module to do this feature: https://www.drupal.org/project/simple_oauth/issues/3126716 → which provides the same.

Proposed resolution

Add two additional fields to the Consumer entity.
1. Access token expiration time
2. Authorization code expiration time
2. Refresh token expiration time

Remaining tasks

User interface changes

API changes

Data model changes