Adapted authkey check to new website return values and prepared for future username display

src/main/java/eu/crushedpixel/replaymod/api/client/ApiClient.java

@@ -39,14 +39,14 @@ public class ApiClient {
         return auth;
     }
 
-    public boolean checkAuthkey(String auth) {
+    public AuthConfirmation checkAuthkey(String auth) {
         try {
             QueryBuilder builder = new QueryBuilder(ApiMethods.check_authkey);
             builder.put("auth", auth);
-            Success succ = invokeAndReturn(builder, Success.class);
-            return succ.isSuccess();
+            AuthConfirmation conf = invokeAndReturn(builder, AuthConfirmation.class);
+            return conf;
         } catch(Exception e) {
-            return false;
+            return null;
         }
     }
 

src/main/java/eu/crushedpixel/replaymod/api/client/holders/AuthConfirmation.java

@@ -0,0 +1,10 @@
+package eu.crushedpixel.replaymod.api.client.holders;
+
+public class AuthConfirmation {
+    private String username;
+    private int id;
+
+    public String getUsername() {
+        return username;
+    }
+}