Added posibility to render view with short reference.

It makes add rendering view the same as php include file which contains
in the same folder.
Add docblock. Made access to protected.
Added tests
Move logic to new RelativeFallbackResolver
Fix misspelling
Add docblock param to constructor
Remade resolver to clear fallback and using it coupling with AggragateResolver
Refactor by removing 1 check.
Removed unnecessary assignment. FallbackResolver wraps entire AggragateResolver.
Fix infinite recursion. Revert to wrap evry resolver.
#6196 - adding missing coverage annotations
#6196 - completely importing dependencies
#6196 - minor CS fixes - removing useless imports
#6196 - fixed unresolved referenced symbol
#6196 - adding missing hints
#6196 - Reverting feedback of zendframework/zendframework@c98907d

This class does not need to be designed for extension. Replacing it is preferrable.
#6196 - Removing unused docblock
#6196 - Adding docblock describing the purpose of the relative fallback resolver class
#6196 - The fallback resolver should ignore unknown view renderer types
#6196 - The fallback resolver should ignore renderers that don't provide the correct plugin type