Set project when creating toggl time entries

[nadavspi]

Would have to optionally create the project https://github.com/toggl/toggl_api_docs/blob/master/chapters/projects.md and use its ID.

[Leland]

Or perhaps just use tags? Would mean not having to check for a project's existence

[nadavspi]

True, but then pollution with the useful sync-error tag.