seperated todoist and habitica api calls into services

Habitica.Todoist.Integration.Model/Todoist/Due.cs

@@ -1,4 +1,5 @@
-using System;
+using Newtonsoft.Json;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Text;
@@ -7,8 +8,11 @@ namespace Habitica.Todoist.Integration.Model.Todoist
 {
     public class Due
     {
+        [JsonProperty("date")]
         public string Date { get; set; }
+        [JsonProperty("timezone")]
         public string Timezone { get; set; }
+        [JsonProperty("string")]
         public string @String { get; set; }
 
         public string ToJavaScriptDateStr()

Habitica.Todoist.Integration.Model/Todoist/Item.cs

@@ -1,14 +1,20 @@
-using System;
+using Newtonsoft.Json;
+using System;
 using System.Linq;
 
 namespace Habitica.Todoist.Integration.Model.Todoist
 {
     public class Item
     {
+        [JsonProperty("content")]
         public string Content { get; set; }
+        [JsonProperty("Id")]
         public string Id { get; set; }
+        [JsonProperty("due")]
         public Due Due { get; set; }
+        [JsonProperty("is_deleted")]
         public int Is_deleted { get; set; }
+        [JsonProperty("date_completed")]
         public string Date_completed { get; set; }
 
         public int? GetDifficulty()

Habitica.Todoist.Integration.Model/Todoist/SyncResponse.cs

@@ -1,4 +1,5 @@
-using System;
+using Newtonsoft.Json;
+using System;
 using System.Collections.Generic;
 using System.Text;
 
@@ -6,8 +7,11 @@ namespace Habitica.Todoist.Integration.Model.Todoist
 {
     public class SyncResponse
     {
+        [JsonProperty("sync_token")]
         public string Sync_token { get; set; }
+        [JsonProperty("full_sync")]
         public bool Full_sync { get; set; }
+        [JsonProperty("itmes")]
         public List<Item> Items { get; set; }
     }
 }