.NET 8 Improvements

[RehanSaeed]

All Templates

• Use simplified output paths.
• Optimize Docker images
• Secure Docker images also see Proposal on non-root container images dotnet/designs#271.
• Switch from ISystemClock to new TimeProvider API.
• Switch to JsonStringEnumConverter<MyEnum>.
• Populate getter collections when deserializing JSON
• Specify serialization options at compile time.

API Template

• AOT

Framework

• Switch to official implementation
• Add extensions for keyed services

[VictorioBerra]

@RehanSaeed what is our timeline to bump templates to .NET 8?