add screen subview

Werkout_ios/APIModels/Muscle.swift

@@ -9,10 +9,11 @@ import Foundation
 
 struct Muscle: Codable, Identifiable, Equatable {
     let id: Int
+    let muscle: Int?
     let name, createdAt, updatedAt: String
     
     enum CodingKeys: String, CodingKey {
-        case id, name
+        case id, name, muscle
         case createdAt = "created_at"
         case updatedAt = "updated_at"
     }