Propagate delete events in shared streams

[Danil-Grigorev]

Motivation

Current implementation of shared stream controllers does not account for Delete events.

Ref: #1590

Solution

Add Delete event processing, with support for removing object from cache after all streams received the final object in a deletion event.

[codecov]

Codecov Report

Attention: Patch coverage is 84.21053% with 6 lines in your changes missing coverage. Please review.

Project coverage is 75.9%. Comparing base (8876639) to head (2099296).

Files with missing lines	Patch %	Lines
kube-runtime/src/reflector/object_ref.rs	0.0%	6 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1673     +/-   ##
=======================================
+ Coverage   75.9%   75.9%   +0.1%     
=======================================
  Files         84      84             
  Lines       7685    7712     +27     
=======================================
+ Hits        5827    5853     +26     
- Misses      1858    1859      +1     

Files with missing lines	Coverage Δ
kube-runtime/src/reflector/dispatcher.rs	97.7% <100.0%> (+1.4%)	⬆️
kube-runtime/src/reflector/store.rs	97.3% <100.0%> (+0.4%)	⬆️
kube-runtime/src/reflector/object_ref.rs	66.1% <0.0%> (-1.9%)	⬇️