Better support for MSBuild extensibility delivered via nugetss

### Context

There are some existing extensibility that users might want to deliver via nugets:
* loggers
* tasks
* sdks/sdkresolvers

There are talks on possible future extensibility that might want to be delivered via nugets:
* BuildCheck / Analyzers
* Project Archetypes

Some of those can already be delivered via nugets, some are complex or near impossible to achieve

### Sample usage scenarios:
* Engineering teams wanting to run builds with custom loggers - this currently requires standalone setup step (to have the logger locally available in known location)
* Custom BuildCheck packages that would require early evaluation access or a initial build access (solution processing etc.)

### Requirements

* Ability to reference versioned nuget packages from commandline (injecting loggers, global BuidChecks etc.)
* Ability to reference nugets within projects (sdks, bildchecks, tasks) and have those resolved during the restore phase and have some metadata available as input into other build phases - so that magic nuget properties or naming doesn't have to be used.

### Goals of initial investigation
* Summarize the scenarios and their requirements
* Define if/what support from nuget side would simplify the scnearios - and negotiate creation of workitem(s) with nuget team
* Propose and prototype solutions without additional nuget support.