MIRTH-3554: A new set of plugin points have been added to allow shared resources for channels/connectors to be configured. There is a new "Resources" tab in the Settings view where resources can be added/modified. Each resource has a type, for example "Library", "Mirth Results", or "Database". The first resource cannot be removed, and by default it uses the Library type, and points to the custom-lib directory. Any new channel/connector created (as well as migrated channels/connectors) will use the custom-lib resource by default.