[WIP] Add Migrations for Enclave Changes to UserCode and CodeHistory

[BrendanSchell]

Description

Add migrations for UserCode and CodeHistory for enclave changes. Includes upgrades to UserCode and SubmitUserCode to add deployment policies. Will have to be updated based on naming changes to deployment policies in https://github.com/OpenMined/PySyft/pull/8981 so PR is WIP for now.

Closes

Affected Dependencies

List any dependencies that are required for this change.

How has this been tested?

• Tested locally by retrieving and converting using obj.migrate_to(version_no) to ensure no errors.

Checklist

• [ ] I have followed the Contribution Guidelines and Code of Conduct
• [ ] I have commented my code following the OpenMined Styleguide
• [ ] I have labeled this PR with the relevant Type labels
• [ ] My changes are covered by tests