Feature: Sync MWS Shipment with Database

Various restructuring and misc. features added.
Removed reliance on ABrain Amazon MWS NuGet package, added Amazon's own C# lib

src/bnhtrade.Core/Data/Database/Connection.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace bnhtrade.Core.Data.Database
+{
+    public class Connection
+    {
+        protected readonly string sqlConnectionString;
+        public Connection(string sqlConnectionString)
+        {
+            // setup sql parameters
+            if (sqlConnectionString.Length == 0)
+            { throw new Exception("Zero length sql connectionstring passed"); }
+            this.sqlConnectionString = sqlConnectionString;
+        }
+    }
+}