playermanager: add. (#1952)

* playermanager: add.
playerscouter: update to use new player manager.
playerscouter: add minify option.

* playermanager: use concurrent maps over standard hash maps.

* playermanager: add attackStyleChanged event.

* playermanager: add all attacking method.

* prayagainst: completely rework it to use playerManager.
playermanager: add friend/clan methods.

* playermanager: utilize new event rather than gametick.

* playermanager: remove gam tick update.

* playermanager: remove gametick method reference.

* hideunder: use playermanager.

* equipmentinspector: use playermanager.

* events: add new docs.

* playermanager: add combat stats sub-class.

* playermanager: add timeout to updateStats

* playermanager: gamepack update.

* playermanager: remove debugging.

* playerscouter: remove unused import

runelite-api/src/main/java/net/runelite/api/events/PlayerAppearanceChanged.java

@@ -0,0 +1,13 @@
+package net.runelite.api.events;
+
+import lombok.Value;
+import net.runelite.api.Player;
+
+/**
+ * This will fire whenever the {@link net.runelite.api.PlayerAppearance} hash changes.
+ */
+@Value
+public class PlayerAppearanceChanged implements Event
+{
+	private Player player;
+}