Add missing scoreboard positions (Fixes #1397)

api/src/main/java/net/md_5/bungee/api/score/Position.java

@@ -6,5 +6,23 @@ package net.md_5.bungee.api.score;
 public enum Position
 {
 
-    LIST, SIDEBAR, BELOW;
+    LIST,
+    SIDEBAR,
+    BELOW,
+    SIDEBAR_BLACK,
+    SIDEBAR_DARK_BLUE,
+    SIDEBAR_DARK_GREEN,
+    SIDEBAR_DARK_AQUA,
+    SIDEBAR_DARK_RED,
+    SIDEBAR_DARK_PURPLE,
+    SIDEBAR_GOLD,
+    SIDEBAR_GRAY,
+    SIDEBAR_DARK_GRAY,
+    SIDEBAR_BLUE,
+    SIDEBAR_GREEN,
+    SIDEBAR_AQUA,
+    SIDEBAR_RED,
+    SIDEBAR_LIGHT_PURPLE,
+    SIDEBAR_YELLOW,
+    SIDEBAR_WHITE;
 }