Support for MacCatalyst

Reproduction steps

Created a new .NET MAUI app and launched it with MacCatalyst. When making a call to Repository.IsValid(projectPath); it will throw the following. Looking at the output folder, the runtimes are not copied there. I have tried manipulating the output folder, but it doesn't seem to be able to resolve the native library properly.

{System.TypeInitializationException: The type initializer for 'LibGit2Sharp.Core.NativeMethods' threw an exception.
 ---> System.DllNotFoundException: git2-e632535
   at LibGit2Sharp.Core.NativeMethods.InitializeNativeLibrary() in **/_/LibGit2Sharp/Core/NativeMet…}**

Running the same command via a console application (.NET 7.0 CLI, not MacCatalyst) executes as expected.

Expected behavior

Native libraries should be copied to the output folder and made available, if possible, for the MacCatalyst platform.

Actual behavior

Native libraries are not copied over and cannot be referenced on MacCatalyst.

Version of LibGit2Sharp (release number or SHA1)

0.27.2

Operating system(s) tested; .NET runtime tested

.NET 7.0 via MacCatalyst-x64 (Mac M1).

先在 .NET 7 MacCatalyst-x64 應用程式中重現 Repository.IsValid(projectPath)，並檢查 Core/NativeMethods 以及輸出資料夾。將 MacCatalyst 輸出與正常運作的主控台應用程式原生執行階段檔案進行比較；完成的條件是必要的原生程式庫已在 MacCatalyst 上複製並解析。