Port Word by Word to .NETCore 3

[dsarlo]

Preliminary research/testing:

Should just be as easy as changing the csproj to the new .NETCore version.

After attempting to convert to .NETCore v3.0.0-preview2, I have discovered that...

MahApps.Metro.IconPacks, MVVMLightLibs, and Microsoft.Xaml.Behaviors.Wpf are not fully compatible yet, while all other nuget packages and API's are ready for the jump.

As for the csproj file, necessary for porting to .NETCore 3, with the current version, it looks like this:

<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>netcoreapp3.0</TargetFramework>
    <UseWPF>true</UseWPF>
    <AssemblyName>WordByWord</AssemblyName>
    <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
    <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
    <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
    <GenerateAssemblyFileVersionAttribute>false</GenerateAssemblyFileVersionAttribute>
    <GenerateAssemblyTitleAttribute>false</GenerateAssemblyTitleAttribute>
    <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
  </PropertyGroup>
  <ItemGroup>
    <None Remove="Resources\Word-by-Word-Google-Service-Account.json" />
  </ItemGroup>
  <ItemGroup>
    <EmbeddedResource Include="Resources\Word-by-Word-Google-Service-Account.json" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="CommonServiceLocator" Version="2.0.4" />
    <PackageReference Include="Google.Cloud.Vision.V1" Version="1.3.0-beta04" />
    <PackageReference Include="MahApps.Metro" Version="2.0.0-alpha0212" />
    <PackageReference Include="MahApps.Metro.IconPacks" Version="3.0.0-alpha0103" />
    <PackageReference Include="Microsoft.Extensions.Logging" Version="3.0.0-preview.19074.2" />
    <PackageReference Include="MvvmLight" Version="5.4.1.1" />
    <PackageReference Include="MvvmLightLibs" Version="5.4.1.1" />
    <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
  </ItemGroup> 
</Project>

Follow this blog for .NETCore csproj changes: http://brianlagunas.com/getting-started-net-core-3-create-wpf-application/

Must update to the new theme manager for MahApps and do the following: