Enable restore for ref and src projects in libraries

[ViktorHofer]

Fixes#29953
Contributes towards #31844

Upfront restore is now taking far too long, presumably because of project evaluation or multiple globs. I'm considering making restore implicit (during the build of the refs, sources and tests) so that the initial restore only handles the depproj files. Under a switch the restore target would still be able to upfront restore everything (CI mode).

Later when we removed all depproj files and sequenced everything into the build, we can remove the -restore action which is passed to the Arcade's Build.proj so that the -restore action is only invoked on demand (CI or before going offline, ie airplane).

Requires

• Remove placeholder configs from restore arcade#4989
• Support transitive P2P references arcade#4992
• Fix sequencing of TargetFrameworkSuffix stripping arcade#4993
• Fix CodeAnalysis analyzerdata includes arcade#4996
• Bundle NuGet.Build.Tasks.Console in redist sdk#10794

cc @Anipik@joperezr@safern

[ericstj]

What's left using this?

[ViktorHofer]

• depproj
• pkgproj

[ericstj]

I see, we should try to clean up this mode, even if it means doing something slightly different for these. I was hoping to completely eliminate this hack.

[joperezr]

@ViktorHofer 😆 🤣

[jaredpar]

Oh man I laughed so hard when I read this it scared the dog

[ViktorHofer]

Failure is #13295