[wip][blazor] Delegate loading of assets to runtime

[pavelsavara]

• Uses config.assets to pass list of resources to load to runtime.
• Uses new downloadResource callback to provide caching implementation of resource loader
• Switched to postRunAsync, simplified preRun and removed need for onRuntimeInitialized
• Moved methods getSatelliteAssemblies, getLazyAssemblies

Requires dotnet/runtime#72275 as pre-requisite.

[SteveSandersonMS]

Thanks @pavelsavara.

In general, things that move runtime-like logic into the runtime are good to do, so we'd surely be pleased to take a change like this.

We just need to ensure that we retain the same functionality as before around things like:

• Custom resource loaders
• Lazy loading
• Caching
• Integrity checking
• Progress reporting (this is new BTW)

Other than the progress reporting which I can see is missing, it's totally possible you've already kept all the functionality in place - it's a bit hard to tell though because there are so many code changes. When this PR is ready for review, would you please be able to write up a description of exactly what has changed in the flow and why?

It would also be valuable to understand how essential it is to include this in .NET 7. It's quite late to take a change that reshuffles so many things as we'll have limited opportunities to catch any edge-case regressions.

Thanks!

[pavelsavara]

Moved to Net8

[pavelsavara]

Replaced by #46532

[ghost]

Hi @pavelsavara. It looks like you just commented on a closed PR. The team will most probably miss it. If you'd like to bring something important up to their attention, consider filing a new issue and add enough details to build context.