Add AsyncDisposableExtensions

[Copilot]

Ports AsyncDisposableExtensions from CliWrap into PowerKit as a general-purpose utility.

Changes

• PowerKit/Extensions/AsyncDisposableExtensions.cs — adds ToAsyncDisposable() extension on IDisposable that wraps the target in an IAsyncDisposable adapter. Calls DisposeAsync() if the object also implements IAsyncDisposable, otherwise falls back to synchronous Dispose(). Useful for writing uniform await using disposal code regardless of the runtime's actual support.
• PowerKit.Tests/AsyncDisposableExtensionsTests.cs — tests both dispatch paths.

Usage

// Works uniformly whether or not the object implements IAsyncDisposable
await using var _ = myDisposable.ToAsyncDisposable();

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.27%. Comparing base (e1aaff9) to head (36107b5).
⚠️ Report is 2 commits behind head on prime.

Files with missing lines	Patch %	Lines
PowerKit/Extensions/AsyncDisposableExtensions.cs	75.00%	1 Missing and 1 partial ⚠️
PowerKit.Tests/AsyncDisposableExtensionsTests.cs	93.75%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            prime      #45      +/-   ##
==========================================
- Coverage   94.36%   94.27%   -0.10%     
==========================================
  Files          82       84       +2     
  Lines        1740     1764      +24     
  Branches      141      143       +2     
==========================================
+ Hits         1642     1663      +21     
- Misses         72       74       +2     
- Partials       26       27       +1     

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[Copilot]

Pull request overview

Ports an AsyncDisposableExtensions helper into PowerKit to allow uniform await using-style disposal by adapting an IDisposable into an async-disposable shape.

Changes:

• Added ToAsyncDisposable() extension to wrap IDisposable into an async-disposable adapter that prefers IAsyncDisposable.DisposeAsync() when available.
• Added tests intended to cover both the IAsyncDisposable and IDisposable disposal paths.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
PowerKit/Extensions/AsyncDisposableExtensions.cs	Introduces ToAsyncDisposable() and an adapter that conditionally calls DisposeAsync() vs Dispose().
PowerKit.Tests/AsyncDisposableExtensionsTests.cs	Adds tests for async vs sync dispatch behavior of the adapter.

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[Tyrrrz]

@copilot please apply formatting

[Copilot]

@copilot please apply formatting

Done in 36107b5.