[Docs] Improve Dependency Injection docs for vanilla Uno Platform app

[MartinZikmund]

What would you like clarification on:

Currently the docs for Extensions DI https://platform.uno/docs/articles/external/uno.extensions/doc/Learn/Tutorials/DependencyInjection/HowTo-DependencyInjectionSetup.html cover only cases where the user already starts with Uno.Extensions-based solution. However, there is no documentation on how to integrate DI into a "vanilla" Uno Platform app based on the default Visual Studio template.

Concern?

• [ ] Usage in industry
• [x] Clarification of capabilities
• [ ] Getting started with Uno
• [ ] Developing with Uno
• [ ] Contributing to the Uno project
• [ ] Publishing your application
• [ ] Support
• [ ] Other (please specify):

For which Platform:

• [ ] WebAssembly
• [ ] Android
• [ ] iOS
• [ ] macOS (AppKit)
• [ ] Mac Catalyst
• [ ] Skia
  • [ ] WPF
  • [ ] GTK (Linux)
  • [ ] Linux Framebuffer
  • [ ] Tizen
• [ ] Windows

Anything else we need to know?

[MartinZikmund]

CC @nickrandolph

[nickrandolph]

Add Hosting support from this doc: https://platform.uno/docs/articles/external/uno.extensions/doc/Overview/Hosting/HostingOverview.html And then you can use Host.Services to access dependencies

Hosting

[MartinZikmund]

@nickrandolph I would then still suggest updating the doc to point to this link. I created this issue as I got report of someone who did not understand how to go about achieving this, so maybe the additional link would help

[nickrandolph]

Yeh docs review is in progress, so yes good suggestion.