Native AOT stack trace integration test

We can't unit test Native AOT implementation of `DebugStackTrace` (there's no xUnit runner to support AOT so no way to test this in unit tests. There's a tracking issue: https://github.com/dotnet/runtime/issues/91069). Instead, we need to have an integration test that captures app requests.

Possible solutions
* use something like the Sentry CLI integration test pwsh script and mock the sentry server
* use something like the SingleFileTestApp and run through unit tests: https://github.com/getsentry/sentry-dotnet/blob/feat/4.0.0/test/Sentry.Tests/Internals/ILSpy/SingleFileAppTests.cs

More context: https://github.com/getsentry/sentry-dotnet/pull/2732#discussion_r1371006441

TODO items have been left as markers in [DebugStackTraceTests.verify](https://github.com/getsentry/sentry-dotnet/blob/257787b47393d00b530662597bdf569673d73340/test/Sentry.Tests/Internals/DebugStackTraceTests.verify.cs), to indicate the test cases that we should try to cover. For example:
```csharp
// TODO: Create integration test to test this behaviour when publishing AOT apps
// See https://github.com/getsentry/sentry-dotnet/issues/2772
[Fact]
public void CreateSentryStackFrame_AppNamespace_InAppFrame()
{
var frame = new StackFrame();
var sut = _fixture.GetSut();

var actual = sut.CreateFrame(new RealStackFrame(frame));

Assert.True(actual?.InApp);
}
```