Add support for @bind:get, @bind:set, @bind:after

[ScarletKuro]

Razor team doesn't provide new nuget assemblies for Razor language: dotnet/razor#9494 (comment)

We are forced to manually extract the libraries and reference them.
These assemblies I took directly from the SDK, so they should be considered "stable".

<h1>Bind Get Set Examples</h1>

<h2>Elements</h2>

<input type="text" @bind:get="text" @bind:set="(value) => { text = value; }" />
<input type="text" @bind:get="text" @bind:set="Set" />
<input type="text" @bind:get="text" @bind:set="SetAsync" />

@text

@code {
    private string text = "test";

    private void Set(string value)
    {
        text = value;
    }

    private Task SetAsync(string value)
    {
        text = value;
        return Task.CompletedTask;
    }
}

This code should now work.

[henon]

Big thanks @ScarletKuro!