Created a Settings Service

Created a Recent Service
Created a Resources Service
Code refactor
Updated tests

ModernKeePassApp.Test/Mock/RecentServiceMock.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.ObjectModel;
+using System.Threading.Tasks;
+using ModernKeePass.Interfaces;
+using Windows.Storage;
+
+namespace ModernKeePassApp.Test.Mock
+{
+    class RecentServiceMock : IRecent
+    {
+        public int EntryCount => 0;
+
+        public void Add(IStorageItem file, string metadata)
+        {
+            throw new NotImplementedException();
+        }
+
+        public ObservableCollection<IRecentItem> GetAllFiles(bool removeIfNonExistant = true)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<IStorageItem> GetFileAsync(string token)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}