[msbuild] Move shared/duplicated code into base XamarinBuildTask class from the FindILLink/FindAotCompiler tasks.

[rolfbjarne]

No description provided.

[vs-mobiletools-engineering-service2]

💻 [PR Build] Tests on macOS M1 - Mac Ventura (13.0) passed 💻

✅ All tests on macOS M1 - Mac Ventura (13.0) passed.

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Hash: [PR build]

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💻 [CI Build] Windows Integration Tests passed 💻

✅ All Windows Integration Tests passed.

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Hash: 89a37bf76dac0012542959d8bcb20f31edebc57d [PR build]

[vs-mobiletools-engineering-service2]

💻 [PR Build] Tests on macOS M1 - Mac Big Sur (11.5) passed 💻

✅ All tests on macOS M1 - Mac Big Sur (11.5) passed.

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📚 [PR Build] Artifacts 📚

Packages generated

View packages

• xamarin.ios-17.1.0.67.pkg
• xamarin.mac-9.1.0.67.pkg

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Hash: [PR build]

[vs-mobiletools-engineering-service2]

✅ API diff for current PR / commit

Legacy Xamarin (No breaking changes)

• iOS (no change detected)
• tvOS (no change detected)
• watchOS (no change detected)
• macOS (no change detected)

NET (empty diffs)

• iOS: (empty diff detected)
• tvOS: (empty diff detected)
• MacCatalyst: (empty diff detected)
• macOS: (empty diff detected)

❗ API diff vs stable (Breaking changes)

Legacy Xamarin (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)

• iOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• tvOS: vsdrops gist (No breaking changes)
• watchOS: vsdrops gist (No breaking changes)
• macOS: vsdrops gist (No breaking changes)

.NET (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)

• iOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• tvOS: vsdrops gist (No breaking changes)
• MacCatalyst: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• macOS: vsdrops gist (No breaking changes)
• Microsoft.iOS vs Microsoft.MacCatalyst: vsdrops gist

Legacy Xamarin (stable) vs .NET

• iOS: vsdrops gist
• tvOS: vsdrops gist
• macOS: vsdrops gist

ℹ️ Generator diff

Generator Diff: vsdrops (html) vsdrops (raw diff) gist (raw diff) - Please review changes)

Pipeline on Agent
Hash: 89a37bf76dac0012542959d8bcb20f31edebc57d [PR build]

[emaf]

We should rename this file to FindAotCompiler

[rolfbjarne]

I tried to do that initially, but the diffs turned out really ugly and difficult to follow if I did it all in the same PR, so I'll rename all the files like this in a separate PR at some point.