Add an interface for the Jail Stick Manager.

Adding the API further this way if someone wants to handle items in a
different way or handle their own implementation of it, they can easily
do it.

src/main/java/com/graywolf336/jail/interfaces/IJailStickManager.java

@@ -0,0 +1,67 @@
+package com.graywolf336.jail.interfaces;
+
+import java.util.UUID;
+
+import org.bukkit.Material;
+
+import com.graywolf336.jail.beans.Stick;
+
+/**
+ * Interface for the jail stick manager.
+ * 
+ * @author graywolf336
+ * @version 1.0.0
+ * @since 3.0.0
+ *
+ */
+public interface IJailStickManager {
+	
+	/**
+     * Gets the {@link Stick jail stick} by the provided {@link Material}, can be null.
+     * 
+     * @param mat of the stick to get
+     * @return The {@link Stick jail stick}
+     */
+    public Stick getStick(Material mat);
+    
+    /**
+     * Checks if the provided Material is a valid {@link Stick jail stick}
+     * 
+     * @param mat the {@link Material} to check
+     * @return whether the provided material is a valid stick
+     */
+    public boolean isValidStick(Material mat);
+    
+    /**
+     * Adds a player to be using a jail stick, with the uuid of the player.
+     * 
+     * @param id of the player to add
+     */
+    public void addUsingStick(UUID id);
+    
+    /**
+     * Removes a player from using a jail stick, with the uuid of the player.
+     * 
+     * @param id of the player to remove using a jail stick
+     */
+    public void removeUsingStick(UUID id);
+    
+    /**
+     * Returns whether or not the player is using a jail stick.
+     * 
+     * @param id of the player to check if using one
+     * @return true if the player is using a jail stick, false if not
+     */
+    public boolean isUsingJailStick(UUID id);
+    
+    /**
+     * Toggles whether the player is using a jail stick, returning the true if enabled false if disabled.
+     * 
+     * @param id of the player to toggle using a stick
+     * @return true if we enabled it, false if we disabled it.
+     */
+    public boolean toggleUsingStick(UUID id);
+    
+    /**  Removes all the users currently using the sticks. */
+    public void removeAllStickUsers();
+}