entityhider: Pets entity hider & isFollower (#2094)

runelite-api/src/main/java/net/runelite/api/Client.java

@@ -1561,6 +1561,13 @@ public interface Client extends GameShell
 	 */
 	void setNPCsHidden2D(boolean state);
 
+	/**
+	 * Sets whether Pets from other players are hidden.
+	 *
+	 * @param state new pet hidden state
+	 */
+	void setPetsHidden(boolean state);
+
 	/**
 	 * Sets whether attacking players or NPCs are hidden.
 	 *

runelite-api/src/main/java/net/runelite/api/NPCDefinition.java

@@ -48,6 +48,8 @@ public interface NPCDefinition
 
 	boolean isClickable();
 
+	boolean isFollower();
+
 	/**
 	 * Gets whether the NPC is visible on the mini-map.
 	 */