Add rules for enum cleanup

[Satyam1749]

In swift, we use switch in enums to populate computed properties.Rules should be created to cleanup any enum entry from all such variables.

example:
Before

enum TestEnum {
   case one
   case two
   case three

   var v1: String {
      switch self {
      case .one:
         return "one"
      case .two:
         return "two"
      case .three:
         return "three"
      }
   }
}

After

enum TestEnum {
   case two
   case three

   var v1: String {
      switch self {
      case .two:
         return "two"
      case .three:
         return "three"
      }
   }
}