feat: add FireTV to PlatformEnum (#23)

Author: chrismParticle

src/main/java/com/mparticle/model/DeviceInformation.java

@@ -55,7 +55,9 @@ public enum PlatformEnum {
 
     SMART_TV("smart_tv"),
 
-    XBOX("xbox");
+    XBOX("xbox"),
+
+    FIRE_TV("FireTV");
 
     private String value;