Module initializer

[cNoNim]

PR Details

Migrate to C# [ModuleInitializer].

Description

Remove Strice.Core.ModuleInitializerAttribute.
Import System.Runtime.CompilerServices.

Related Issue

#1836

Motivation and Context

C# 9 has support of [ModuleInitializer] https://learn.microsoft.com/ru-ru/dotnet/csharp/language-reference/proposals/csharp-9.0/module-initializers.
And as part of #1835 it's good idea to migrate to them.

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.

[cNoNim]

Create Draft PR for progress overview.
I think this is a breaking change.
And we need to resolve a number of issues, which I will write about a little later. Now I will prepare a separate PR with a fix for AssemblyProcessor compilation.

[IXLLEGACYIXL]

this is not directly needed anymore with module processor roslyn source generator
currently strides module intiializer is generated as c# module initializer

the order "can be removed "as soon as everything is source generated into that as the only order mattered was stride internal anyway