Implemented 7 Christmas Holiday randoms:

Snowman
Snowman Fight
Santa
Jack Frost
Choir
Snowstorm
Cook

Server/src/main/core/ServerConstants.kt

@@ -318,6 +318,9 @@ class ServerConstants {
         @JvmField
         var FORCE_HALLOWEEN_RANDOMS = false
 
+        @JvmField
+        var FORCE_CHRISTMAS_RANDOMS = false
+
         @JvmField
         var RUNECRAFTING_FORMULA_REVISION = 581
     }