Implement Static abstract members in interfaces

[MishaProductions]

Currently, when compiling the following code using master branch:

using System;
using System.Collections.Generic;
using System.Text;
using Sys = Cosmos.System;
using System.Runtime.Versioning;

namespace net8test
{
    public class Kernel: Sys.Kernel
    {
        [RequiresPreviewFeatures]
        protected override void BeforeRun()
        {
            var test = new Test();
            Test.InvokeBreakIl2cpu();
        }

        protected override void Run()
        {
            Console.Write("Input: ");
            var input = Console.ReadLine();
            Console.Write("Text typed: ");
            Console.WriteLine(input);
        }
    }

    public interface ITest<T>
    {
        [RequiresPreviewFeatures]
        public static abstract bool DoThings<TOther>(TOther value);
    }

    public class Test : ITest<object>
    {
        [RequiresPreviewFeatures]
        static bool ITest<object>.DoThings<TOther>(TOther t)
        {
            return true;
        }
        [RequiresPreviewFeatures]
        public static void BreakIl2cpu<TImplementation, TOther>() where TImplementation : ITest<object>
        {
             TImplementation.DoThings<Test>(new Test());
        }
         [RequiresPreviewFeatures]
        public static void InvokeBreakIl2cpu()
        {
            BreakIl2cpu<Test, object>();
        }
    }
}

Will result in the DoThings method not being emitted:

bin/cosmos/Debug/net6.0/net8test.asm:119142: error: undefined symbol `A0SystemBooleanA9A9net8testITest1A0SystemObjectDoThingsA9net8testTestA9net8testTest' (first use)
bin/cosmos/Debug/net6.0/net8test.asm:119142: error:  (Each undefined symbol is reported only once.)

Add the following to your csproj to reproduce the issue:

<EnablePreviewFeatures>true</EnablePreviewFeatures>
<LangVersion>11</LangVersion>

This issue blocks .NET 8 support as types such as UInt32 rely on this feature.

[Guillermo-Santos]

bin/cosmos/Debug/net6.0/net8test.asm:119142: error: undefined symbol `A0SystemBooleanA9A9net8testITest1A0SystemObjectDoThingsA9net8testTestA9net8testTest' (first use) bin/cosmos/Debug/net6.0/net8test.asm:119142: error: (Each undefined symbol is reported only once.)

If I am reading this correctly, it seems like IL2CPU is looking at the interface implementations, not the class implementation, since on the symbol label it is using net8testITest not net8testTest.