move some xamarin specific services to app proj

src/App/App.csproj

@@ -12,6 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Xamarin.Essentials" Version="1.1.0" />
     <PackageReference Include="Xamarin.Forms" Version="3.6.0.264807" />
   </ItemGroup>
 

src/App/Services/MobileStorageService.cs

@@ -1,8 +1,9 @@
-using Bit.Core.Abstractions;
+using Bit.Core;
+using Bit.Core.Abstractions;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 
-namespace Bit.Core.Services
+namespace Bit.App.Services
 {
     public class MobileStorageService : IStorageService
     {

src/App/Services/PreferencesStorageService.cs

@@ -4,7 +4,7 @@ using Newtonsoft.Json.Serialization;
 using System;
 using System.Threading.Tasks;
 
-namespace Bit.Core.Services
+namespace Bit.App.Services
 {
     public class PreferencesStorageService : IStorageService
     {

src/App/Services/SecureStorageService.cs

@@ -3,7 +3,7 @@ using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 using System.Threading.Tasks;
 
-namespace Bit.Core.Services
+namespace Bit.App.Services
 {
     public class SecureStorageService : IStorageService
     {

src/Core/Core.csproj

@@ -15,7 +15,6 @@
     <PackageReference Include="LiteDB" Version="4.1.4" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
     <PackageReference Include="PCLCrypto" Version="2.0.147" />
-    <PackageReference Include="Xamarin.Essentials" Version="1.1.0" />
   </ItemGroup>
 
 </Project>