feat(backup): additional options for database backups

[paulwer]

What is this PR about?

Adds a new optional field additionalOptions that allows users to pass extra arguments to the dump commands for databases.

Checklist

Before submitting this PR, please make sure that:

• You created a dedicated branch based on the canary branch.
• You have read the suggestions in the CONTRIBUTING.md file https://github.com/Dokploy/dokploy/blob/canary/CONTRIBUTING.md#pull-request
• You have tested this PR in your local instance.

Issues related (if applicable)

closes #3191

Screenshots (if applicable)

[michakfromparis]

Yes. I second that. This is key to restore a db with acl or RLS. Totally necessary for logto for example