Updates OSRS Archipelago Plugin to v1.2

[digiholic]

• ~~Archipelago Client Plugin is now on Maven! No more direct vendoring of plugin code!~~ Nevermind it needed to be vendored anyway!
• Adds new checkbox for toggling AP messages going to OSRS chatbox
• AP Server Password is now an actual password field, using placeholders instead
• Replaces hard-coded tasks with data parsed from github, using version information from Archipelago slot data. This should allow for logic changes that don't require a whole new plugin version to use.
• Adds in a local DataPackage storage, which will store the Slot's connected player and last received item index. This will make reconnection smoother as well as allowing you to see popups for items received while offline.