[API Proposal]: ComObject.CreateInstance for ComWrappers

[Gaoyifei1011]

Background and motivation

With the popularity of.native AOT use, more and more people are switching from the built-in com interop to the new ComWrappers. In the previous built-in Com Interop, we used the Activater.createInstance (Type.GetTypeFromCLsID(Guid guid)) method to create a system.__comobject object, The P/Invoke CoCreateInstance method can also be used to create COM objects, but after switching to ComWrappers, we can only use the P/Invoke CoCreateInstance method to create COM objects. So I think the.net team should at System.Runtime.InteropServices.Marshalling.Com provides a static method in the Object class, can be convenient to create a COM Object.
In CsWinRT, such static methods are already provided

随着 .Native AOT 使用的普及，越来越多的人从内置的 com interop 转换为新的 ComWrappers。在之前内置的 Com Interop 中，我们可以使用 Activator.CreateInstance(Type.GetTypeFromCLsID(Guid guid))这个方法创建 system.__comobject 对象，也可以 P/Invoke CoCreateInstance 方法来创建 COM 对象，然而切换到 ComWrappers 后，我们只能使用 P/Invoke CoCreateInstance 方法来创建 COM 对象。所以我认为 .NET 团队应该在 System.Runtime.InteropServices.Marshalling.ComObject 类中提供一个静态方法，可以方便快捷的创建 COM 对象。
在 CsWinRT 中，已经提供了这样的静态方法

Reference link in CsWinRT:microsoft/CsWinRT#1717

API Proposal

namespace System.Runtime.InteropServices.Marshalling

public enum ClassContext : uint
{
    InProcServer,
    LocalServer
}

public class ComObject
{
    public static T CoCreateInstance<T>(in Guid classId, in Guid interfaceId, ClassContext classContext)
        where T : class;

    public static ComObject CoCreateInstance(in Guid classId, in Guid interfaceId, ClassContext classContext);
}

API Usage

// Fancy the value
ComObject c = ComObject.CreateInstance(in Guid classId, in Guid interfaceId, ClassContext classContext);
Or

T comobject = ComObject.CreateInstance<T>(in Guid classId, in Guid interfaceId, ClassContext classContext);

### Alternative Designs

None

### Risks

None

[agocke]

cc @jkoritzinsky

[AaronRobinsonMSFT]

Duplicate of #106979