Implementing PartyFinder notificator

[Tischel]

Suggestion from: https://github.com/NightmareXIV/NotificationMaster/issues/8

Adds a new type of notification for PartyFinder events:

Features:

• Sends a notification if the party fills
• Optionally sends a notification if a player joins or leaves the party
• Optionally sends a notification if the party is delisted. This can be caused by different things and some of these events will only reach the party leader.

Notes: In my experience the easiest and most reliable way to know the party size is through the in-game party list addon. This way there's no need to have cross world parties specific checks or anything like that. I used to detect changes on the party member count. Also there's a hook to RaptureLogModule's ShowLogMessage to detect when the party fills or is delisted.

[Limiana]

Thank you! Might need some additional work to support alliance raids, but we'll see about it later.