Created separate project for herbicide

FarmmapsNbs/NitrogenService.cs

@@ -1,17 +1,13 @@
 using System;
-using System.Collections.Generic;
 using System.Globalization;
-using System.IO;
-using System.Linq;
 using System.Threading.Tasks;
 using FarmmapsApi.Models;
 using FarmmapsApi.Services;
 using Microsoft.Extensions.Logging;
-using Newtonsoft.Json.Linq;
 using static FarmmapsApi.Extensions;
 using static FarmmapsApiSamples.Constants;
 
-namespace FarmmapsApiSamples
+namespace FarmmapsNbs
 {
     public class NitrogenService
     {