Updated the OpenGroupManager to support injecting the cache for better unit testing
Updated the MessageReceiver to support Dependencies being passed as a parameter for visible message and storage purposes
Added a debugDescription to the OpenGroup for more accurate unit testing
Fixed an issue where the poll function would include the inbox and outbox endpoints even when the server was not blinded
Fixed some test compilation time issues
Fixed a bug where the OpenGroupAPI Room was using 'description' as a parameter name (used by Swift for other purposes)
Fixed a bug where then OpenGroup was incorrectly using the system 'description' property in one place
Renamed the parseV2OpenGroup to parseOpenGroup for consistency
Added a Nimble predicate for checking a function on a mock was called
Added the various remove methods to the Storage protocol
Updated the Ed25519Type to be an instance-based protocol (needed for mocking)
Removed an unused endpoint
Moved 'Dependencies' into the Utilities folder (also out from being nested within 'OpenGroupAPI' since it can be broader than that)
Finished adding unit tests for the OpenGroupAPI