Add ChainedDelegateConsentService with pluggable vote strategy

[michaelabuckley]

Add plumbing for combining IConsentServices with different vote tally strategies

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 83.54%. Comparing base (406db33) to head (d3bf128). Report is 60 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #6366 +/- ## ============================================ - Coverage 83.54% 83.54% -0.01% - Complexity 27432 27663 +231 ============================================ Files 1707 1723 +16 Lines 106185 106999 +814 Branches 13397 13455 +58 ============================================ + Hits 88710 89389 +679 - Misses 11750 11834 +84 - Partials 5725 5776 +51 ```

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