[Fabric] Community Modules Should Autolink on Fabric

[chiaramooney]

Filing issue to track the work of adding autolinking support for community modules on Fabric.

[chrisglein]

Autolinking for native modules should work the same. View managers is something else. Will need to figure out auto linking of those once we have N=1.

[jonthysell]

Auto-linking worked fine in the NativeMdouleSample/cpp-lib sample, that is, identifying the package providers and generating the right auto-linking code, which didn't modify the template at all.

Really #12641 should cover making sure that that the package providers have the correct code for exposing any fabric view components so that the autolinking actually does something.