Edits copy and removes tokens and treeshaking
sections to reduce content duplication and keep
info focused. Moves provideParent() from di-navtree
to di providers.
PR Close#39403
adds new DI technique recommendation for libraries to ensure tree-shaking for unused services
includes reasons for packaging schematics with libraries, clarify schematic usage recommendation
PR Close#36144
Teri Glover
Amadou Sall
Kapunahele Wong
Aristeidis Bampakos
Judy Bogart