C# PrivateImplementationDetails class can contain module name with '.', confusing tools which expect to parse into namespaces

[agocke]

Commit 38aa68d adds the module name to the PrivateImplementationDetails class to prevent #1228. If that module name contains '.', tools which consume metadata and attempt to reverse engineer C# namespaces can become confused and believe that the dots represent namespace separators. For example, this is the result in refasmgen:

.namespace '<PrivateImplementationDetails><Maui.Core'
{
    .class private sealed 'dll>'
        extends [mscorlib]System.Object
    {
        .custom instance void [mscorlib]System.Runtime.CompilerServices.CompilerGeneratedAttribute::.ctor() = { }
        .method assembly static 
            uint32 ComputeStringHash(string s)
        {
            ret
        }
        .field static assembly initonly int64 '7E50BDC673C53A3E19E50BC237337FA9902ABB30'
    }
}

[gafter]

See #1428 for a proposed solution.

[gafter]

@VSadov I believe you might be looking at this.