Enable building NativeAOT for Apple mobile platforms

[ivanpovazan]

Description

dotnet/runtime currently does not support building NativeAOT subset (framework, SDK libraries and tools) for iOS platforms. Additionally, building an appropriate runtime NuGet package for these platforms is also unavailable.

Enable building NativeAOT subset and creating matching runtime NuGet packages for the following set of platforms (target operating system and architecture combinations):

• iOS/tvOS (arm64)
• iOS/tvOS Simulator (x64, arm64)
• MacCatalyst (x64, arm64)

The feature should be conditionally included by introducing appropriate preprocessor directives

Remaining tasks:

• Enable building the NativeAOT runtime - Enable building NativeAOT for Apple mobile platforms #81780
• Fix NativeAOT ICU build integration for Apple mobile platforms  #82389
• HelloiOS sample for NativeAOT #80911
• Add runtime packs for the platforms - Add NativeAOT runtime pack build for iOS/tvOS/Catalyst #85047

Tagging subscribers to this area: @agocke, @MichalStrehovsky, @jkotas
See info in area-owners.md if you want to be subscribed.

Issue Details

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Author:	ivanpovazan
Assignees:	-
Labels:	untriaged, area-NativeAOT-coreclr
Milestone:	-

Tagging subscribers to 'os-ios': @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

dotnet/runtime currently does not support building NativeAOT subset (framework, SDK libraries and tools) for iOS platforms. Additionally, building an appropriate runtime NuGet package for these platforms is also unavailable.

Proposal

Enable building NativeAOT subset and creating matching runtime NuGet packages for the following set of platforms (target operating system and architecture combinations):
- ios-arm64
- ios-x64
- iossimulator-arm64
- iossimulator-x64

The feature should be conditionally included by introducing appropriate preprocessor directives

Author:	ivanpovazan
Assignees:	-
Labels:	os-ios, area-NativeAOT-coreclr
Milestone:	-