[msbuild] Add support for bundling original resources in libraries. Fixes #19028.

[rolfbjarne]

If a library references resources, until now we've pre-compile/pre-processed
some of those before embedding them the library. This applies to resources of
the following item groups:

• AtlasTexture
• BundleResource
• Collada
• CoreMLModel
• ImageAsset
• InterfaceDefinition
• SceneKitAsset

However, pre-processing resources as a few problems:

• It requires a native (Xcode) toolchain.
  • This is unfortunate when building from Windows: the current approach is
    that when building a library as a referenced project, the remoting part
    is skipped, so all such resources are just dropped.
  • It also means building on Linux doesn't work.
• It makes it impossible to merge resources with the same name, if we wanted
  to do that.

So I'm adding support for bundling the original resources in library projects.

This is enabled using the MSBuild property BundleOriginalResources=true,
which is turned off by default for .NET 9 and turned on by default for .NET 10+.

Additionally I've added PartialAppManifest items to the list of bundled
resources from class libraries.

This means that there are numerous task we don't have to remote to the Mac anymore (when bundling original resources) - in particular libraries can be fully built on Windows (or any other platform) now.

Fixes #19028.
Fixes #19513.

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✅ API diff for current PR / commit

.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)

✅ API diff vs stable

.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)

ℹ️ Generator diff

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

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[rolfbjarne]

/azp run xamarin-macios-pr,xamarin-macios-apidiff

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Tests counts

✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (macOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (Multiple platforms): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (tvOS): All 1 tests passed. Html Report (VSDrops) Download
✅ framework: All 2 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 4 tests passed. Html Report (VSDrops) Download
✅ generator: All 5 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 4 tests passed. Html Report (VSDrops) Download
✅ introspection: All 4 tests passed. Html Report (VSDrops) Download
✅ linker: All 40 tests passed. Html Report (VSDrops) Download
✅ monotouch (iOS): All 7 tests passed. Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 10 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 9 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ monotouch (tvOS): All 7 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 4 tests passed. Html Report (VSDrops) Download
✅ xtro: All 1 tests passed. Html Report (VSDrops) Download

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