.net6 iOS support

To get maui-ios working, the ios targets of this nuget must be updated.

VideoLAN.LibVLC.iOS.targets:

<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup Condition="(('$(Platform)' == 'iPhoneSimulator') OR $(RuntimeIdentifier.StartsWith('iossimulator')))">
    <NativeReference Include="$(MSBuildThisFileDirectory)ios-simulator\DynamicMobileVLCKit.framework">
      <Kind>Framework</Kind>
    </NativeReference>
  </ItemGroup>
  <ItemGroup Condition="(('$(Platform)' == 'iPhone') OR ('$(RuntimeIdentifier)' == 'ios') OR $(RuntimeIdentifier.StartsWith('ios-')))">
    <NativeReference Include="$(MSBuildThisFileDirectory)ios-device\DynamicMobileVLCKit.framework">
      <Kind>Framework</Kind>
    </NativeReference>
  </ItemGroup>
</Project>