[src/generator] Stop implying Mac Catalyst availability attributes from the iOS attributes.

[rolfbjarne]

Stop implying Mac Catalyst attributes from the iOS attributes, and instead
treat Mac Catalyst like all the other platforms (not implying anything from
any other platform).

This makes our attribute logic much easier to reason about and understand.

It also required adding numerous Mac Catalyst attributes that were previously
implied. This task was way too big to do manually, so I made some changes to
Chris' mellite tool, and managed to do it quite easily with Roslyn with the
changes in this branch: https://github.com/rolfbjarne/mellite/tree/explicit-maccatalyst-attributes

This PR is probably best reviewed commit-by-commit.

[github-actions]

⚠️ Your code has been reformatted. ⚠️

If this is not desired, add the actions-disable-autoformat label, and revert the reformatting commit.

If files unrelated to your change were modified, try reverting the reformatting commit + merging with the target branch (and push those changes).

[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

Legacy Xamarin (No breaking changes)

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

.NET (No breaking changes)

• iOS: vsdrops gist (No breaking changes)
• tvOS: vsdrops gist (No breaking changes)
• MacCatalyst: vsdrops gist (No breaking changes)
• 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: 17d2f5afdc85ee6992984ac52a65739e63bcd53a [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.

Pipeline on Agent
Hash: 17d2f5afdc85ee6992984ac52a65739e63bcd53a [PR build]

[vs-mobiletools-engineering-service2]

📚 [PR Build] Artifacts 📚

Packages generated

View packages

• Microsoft.iOS.Bundle.16.2.126-ci.pr.gh17375.pkg
• Microsoft.iOS.Ref.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Runtime.ios-arm.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Runtime.ios-arm64.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Runtime.iossimulator-arm64.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Runtime.iossimulator-x64.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Runtime.iossimulator-x86.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Sdk.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Templates.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.iOS.Windows.Sdk.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.MacCatalyst.Bundle.16.2.126-ci.pr.gh17375.pkg
• Microsoft.MacCatalyst.Ref.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.MacCatalyst.Runtime.maccatalyst-arm64.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.MacCatalyst.Runtime.maccatalyst-x64.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.MacCatalyst.Sdk.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.MacCatalyst.Templates.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.macOS.Bundle.13.1.126-ci.pr.gh17375.pkg
• Microsoft.macOS.Ref.13.1.126-ci.pr.gh17375.nupkg
• Microsoft.macOS.Runtime.osx-arm64.13.1.126-ci.pr.gh17375.nupkg
• Microsoft.macOS.Runtime.osx-x64.13.1.126-ci.pr.gh17375.nupkg
• Microsoft.macOS.Sdk.13.1.126-ci.pr.gh17375.nupkg
• Microsoft.macOS.Templates.13.1.126-ci.pr.gh17375.nupkg
• Microsoft.NET.Sdk.iOS.Manifest-7.0.100.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.NET.Sdk.MacCatalyst.Manifest-7.0.100.16.2.126-ci.pr.gh17375.nupkg
• Microsoft.NET.Sdk.macOS.Manifest-7.0.100.13.1.126-ci.pr.gh17375.nupkg
• Microsoft.NET.Sdk.tvOS.Manifest-7.0.100.16.1.914-ci.pr.gh17375.nupkg
• Microsoft.NET.Workload.iOS.16.2.126-ci.pr.gh17375.msi
• Microsoft.tvOS.Bundle.16.1.914-ci.pr.gh17375.pkg
• Microsoft.tvOS.Ref.16.1.914-ci.pr.gh17375.nupkg
• Microsoft.tvOS.Runtime.tvos-arm64.16.1.914-ci.pr.gh17375.nupkg
• Microsoft.tvOS.Runtime.tvossimulator-arm64.16.1.914-ci.pr.gh17375.nupkg
• Microsoft.tvOS.Runtime.tvossimulator-x64.16.1.914-ci.pr.gh17375.nupkg
• Microsoft.tvOS.Sdk.16.1.914-ci.pr.gh17375.nupkg
• Microsoft.tvOS.Templates.16.1.914-ci.pr.gh17375.nupkg
• xamarin.ios-16.2.1.126.pkg
• xamarin.mac-9.1.1.126.pkg

Pipeline on Agent XAMBOT-1042.Monterey'
Hash: 17d2f5afdc85ee6992984ac52a65739e63bcd53a [PR build]

[vs-mobiletools-engineering-service2]

🔥 [CI Build] Test results 🔥

Test results

❌ Tests failed on VSTS: simulator tests

0 tests crashed, 1 tests failed, 224 tests passed.

Failures

❌ bcl tests

1 tests failed, 68 tests passed.

• [NUnit] Mono Mac OS X BCL tests group 1/Mac Full/Debug: TimedOut

Html Report (VSDrops) Download

Successes

✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests: All 1 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 7 tests passed. Html Report (VSDrops) Download
✅ framework: All 8 tests passed. Html Report (VSDrops) Download
✅ generator: All 2 tests passed. Html Report (VSDrops) Download
✅ interdependent_binding_projects: All 7 tests passed. Html Report (VSDrops) Download
✅ install_source: All 1 tests passed. Html Report (VSDrops) Download
✅ introspection: All 8 tests passed. Html Report (VSDrops) Download
✅ linker: All 65 tests passed. Html Report (VSDrops) Download
✅ mac_binding_project: All 1 tests passed. Html Report (VSDrops) Download
✅ mmp: All 2 tests passed. Html Report (VSDrops) Download
✅ mononative: All 12 tests passed. Html Report (VSDrops) Download
✅ monotouch: All 25 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ mtouch: All 1 tests passed. Html Report (VSDrops) Download
✅ xammac: All 3 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 8 tests passed. Html Report (VSDrops) Download
✅ xtro: All 2 tests passed. Html Report (VSDrops) Download

Pipeline on Agent
Hash: 17d2f5afdc85ee6992984ac52a65739e63bcd53a [PR build]

[rolfbjarne]

Test failure is unrelated (https://github.com/xamarin/maccore/issues/2450).