More dynamic approach to dict views types

[brl0]

This is a revisit of my previous effort to add support for dict views type objects. I had some ideas rattling around to try to make it a bit more dynamic and extensible.

[codecov]

Codecov Report

Merging #435 (513a938) into master (343da11) will decrease coverage by 2.80%.
The diff coverage is 61.66%.

@@            Coverage Diff             @@
##           master     #435      +/-   ##
==========================================
- Coverage   92.36%   89.55%   -2.81%     
==========================================
  Files           4        4              
  Lines         720      747      +27     
  Branches      150      158       +8     
==========================================
+ Hits          665      669       +4     
- Misses         34       49      +15     
- Partials       21       29       +8     

Impacted Files	Coverage Δ
cloudpickle/cloudpickle.py	86.07% <56.52%> (-2.24%)	⬇️
cloudpickle/cloudpickle_fast.py	93.17% <64.86%> (-3.70%)	⬇️

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