pub type WorkerProjectsBacklogList<T: Config> = StorageMap<_GeneratedPrefixForStorageWorkerProjectsBacklogList<T>, Blake2_128Concat, T::AccountId, Vec<T::Hash>>;
Project owner sends project ref to worker address (AccountId is the Worker). Note: Currently unbounded Vec!
This is a list of the Projects that are currently assigned by a project owner. The worker can accept to work on these, or remove them from the list. If they have already worked on them they cannot be removed.