Remove dependency on LibGit2Sharp

[DefaultRyan]

No description provided.

[Copilot]

Pull request overview

This PR attempts to remove the LibGit2Sharp NuGet package dependency from the FileExplorerGitIntegration project. However, the removal is incomplete as the codebase still extensively uses LibGit2Sharp types and imports.

Key Changes:

• Removes LibGit2Sharp version 0.30.0 from package references

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[Copilot]

Removing the LibGit2Sharp package reference will cause compilation errors. The codebase still has multiple references to LibGit2Sharp types that are not defined elsewhere:

1. Files still importing LibGit2Sharp:

   • Models/GitRepositoryStatus.cs (line 4)
   • Models/GitStatusEntry.cs (line 6)
   • Models/RepositoryWrapper.cs (line 6)
   • Models/StatusCache.cs (line 7)

2. LibGit2Sharp types still in use:

   • FileStatus enum: Used extensively in GitRepositoryStatus.cs, GitStatusEntry.cs, RepositoryWrapper.cs, and StatusCache.cs
   • SubmoduleStatus enum: Used in GitRepositoryStatus.cs, RepositoryWrapper.cs, and StatusCache.cs

Before removing this dependency, you need to either:

• Define custom FileStatus and SubmoduleStatus enums to replace the LibGit2Sharp types
• Remove all code that depends on these types
• Replace the LibGit2Sharp implementation with an alternative approach