Cleanup sync and log sync status locally

[eelcovdw]

Description

• localstate now logs both state after successful sync, and status info on both success and error.
• local state now logs ignored files
• move shared types, producer logic and localstate to more sensible place
• change errorhandling in consumer so we can log failures to localstate

TODO

• add simple sync dashboard html + endpoint
• to list queued/inprogress items, sync router needs access to SyncManager. Not possible with syftclient interface, causes a circular dependency
• cleanup enums with the same function in sync/types.py
• log rejected files (no permissions, etc) with a rejected status, error status should be for unexpected connection/server errors

Affected Dependencies

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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

[eelcovdw]

Discussed this with @yashgorana , we made some changes so we can read SyncManager state directly (instead of from local_state file). Will be included in next PR