Enhancement - Update build.ps1/build.netcore.ps1 to allow for building/packaging for subset of architectures

[amaitland]

When building custom version of CefSharp it maybe desirable to only build/package a subset of the x86/x86/arm64 architectures. e.g. You may only wish to build x86/x64 for your custom version.

The nupkg process will fail if the files don't exist, so we need to perform some modifications dynamically.

• Merge https://github.com/cefsharp/CefSharp/blob/master/build.netcore.ps1 into build.ps1
• Update https://github.com/cefsharp/CefSharp/blob/master/build.ps1
• Dynamically rewrite the Nuspec files to exclude any arch that isn't required. e.g. remove arm64.
• Validate BrowserSubProcess has TSAware and LargeAddressAware attributes set.

To simplify this issue #3444 should likely be resolved first. I'm adding the breaking-change label, whilst this change in itself isn't breaking, the changes in #3444 will be.

Related issue cefsharp/cef-binary#98

[amaitland]

To simplify this the remaining c# projects have been migrated to the newer SDK Style project format in commit 67a08c4

[amaitland]

Tests are now failing when run via AppVeyor

https://ci.appveyor.com/project/cefsharp/cefsharp/builds/41113154

[campersau]

It looks like the cef dependencies aren't copied to the output directory anymore (I can reproduce it by deleting the bin/obj folders before duing a build).

Adding the following lines to https://github.com/cefsharp/CefSharp/blob/master/CefSharp.Test/CefSharp.Test.csproj fixes it:

    <Target Name="CefCopy" AfterTargets="Build">
        <CallTarget Targets="CefRedist32CopyResources" Condition="'$(Platform)' == 'x86'"/>
        <CallTarget Targets="CefRedist64CopyResources" Condition="'$(Platform)' == 'x64'"/>
    </Target>

Looks like this got removed here:
67a08c4#diff-b6fc1d6d9c3d3eff95f339ef0f4455fbf23bf9bcb59d53500632de453f4f676dL11-L13
67a08c4#diff-b6fc1d6d9c3d3eff95f339ef0f4455fbf23bf9bcb59d53500632de453f4f676dL16-L19

[amaitland]

I'll fix the errors shortly.

[amaitland]

The chromiumembeddedframework.runtime package is now used internally. Tests should now be passing again.

[amaitland]

It should now be possible to compile only a subset of architectures

.\build.ps1 -BuildArches "x64"
.\build.ps1 -BuildArches "x64 x86"

.\build.ps1 -BuildArches "x64" -TargetFramework NetCore
.\build.ps1 -BuildArches "x64 x86" -TargetFramework NetCore