MvvmCross v7.0.0 Release Broke TipCalc.Droid Project
## 🐛 Bug Report

<!--- Summary description of the bug --->
After updating to MvvmCross v7.0.0; I am unable to get the TipCalc project working correctly within the Android project. The namespace, MvvmCross.Platforms.Android.Views, cannot be resolved. 

### Expected behavior
The expected behavior would be for it to be resolving correctly and then the TipView class should be able to resolve from MvxActivity<T>.

### Reproduction steps
Install the latest version of MvvmCross in the TipCalc.Droid project. The following using directives will cause a compile-time error:
```csharp
using MvvmCross.Platforms.Android.Core;
using MvvmCross.Platforms.Android.Views;
```

### Configuration
Here is the MainApplication.cs file from the TipCalc.Droid:
```csharp
using System;
using Android.App;
using Android.Runtime;
using MvvmCross.Platforms.Android.Core;
using MvvmCross.Platforms.Android.Views;
using TipCalc.Core;

namespace TipCalc.Droid
{
    [Application]
    public class MainApplication : MvxAndroidApplication<MvxAndroidSetup<App>, App>
    {
        public MainApplication(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
        {
        }
    }
}
```
Here is the TipView.cs file that is located in the TipCalc.Droid.Views namespace:
```csharp
using Android.App;
using Android.OS;
using MvvmCross.Platforms.Android.Views;
using TipCalc.Core.ViewModels;

namespace TipCalc.Droid.Views
{
    [Activity(Label = "Tip Calculator", MainLauncher = true)]
    public class TipView : MvxActivity<TipViewModel>
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            SetContentView(Resource.Layout.TipView);
        }
    }
}
```

**Version:** 7.0.0

**Platform:** 
- [ ] :iphone: iOS
- [x] :robot: Android
- [ ] :checkered_flag: WPF
- [ ] :earth_americas: UWP
- [ ] :apple: MacOS
- [ ] :tv: tvOS
- [ ] :monkey: Xamarin.Forms
