Hash access tokens stored in the database

[codedmonkey]

Improves security by hashing access tokens stored in the database, includes:

• Migration to hash tokens
• Event listeners to hash and verify tokens
• Code style fixes
• Implemented expiration date for access tokens
• Removed token value from list view, showing it in a flash message instead

[gitguardian]

️✅ There are no secrets present in this pull request anymore.

If these secrets were true positive and are still valid, we highly recommend you to revoke them.
Once a secret has been leaked into a git repository, you should consider it compromised, even if it was deleted immediately.
Find here more information about risks.

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