Document NOTE color constant in Colors.kt

Added documentation for the NOTE color constant.

Author: TheBjoRedCraft

surf-api-core/surf-api-core-api/src/main/kotlin/dev/slne/surf/surfapi/core/api/messages/Colors.kt

@@ -44,6 +44,14 @@ interface Colors {
         @JvmField
         val INFO: TextColor = color(0x97B3F7)
 
+        /**
+         * The note color (#6EA6D9).
+         * Used to display a note or other which is not 
+         * an info or primary text
+         */
+        @JvmField
+        val NOTE: TextColor = color(0x6EA6D9)
+
         /**
          * The success color (#65ff64).
          * Indicates a positive outcome of a user action and is always