Expose loginIndex and otp fields from runescape client

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

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

@@ -151,6 +151,13 @@ public interface Client extends GameEngine
 	 */
 	void setPassword(String password);
 
+	/**
+	 * Sets the 6 digit pin used for authenticator on login screen.
+	 *
+	 * @param otp one time password
+	 */
+	void setOtp(String otp);
+
 	/**
 	 * Gets currently selected login field. 0 is username, and 1 is password.
 	 *
@@ -158,6 +165,13 @@ public interface Client extends GameEngine
 	 */
 	int getCurrentLoginField();
 
+	/**
+	 * Gets index of current login state. 2 is username/password form, 4 is authenticator form
+	 *
+	 * @return current login state index
+	 */
+	int getLoginIndex();
+
 	/**
 	 * Gets the account type of the logged in player.
 	 *