BindByIndex implementation

[atifaziz]

This PR implements BindByIndex as proposed in #550. It is a prototype implementation and being shared for the purpose of discussion and review of #550.

[codecov]

Codecov Report

❌ Patch coverage is 86.17021% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.11%. Comparing base (9f6dc48) to head (6218492).
⚠️ Report is 11 commits behind head on master.

Files with missing lines	Patch %	Lines
MoreLinq/BindByIndex.cs	86.17%	12 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #552      +/-   ##
==========================================
- Coverage   93.30%   93.11%   -0.19%     
==========================================
  Files         113      114       +1     
  Lines        3448     3542      +94     
  Branches      971      998      +27     
==========================================
+ Hits         3217     3298      +81     
- Misses        215      227      +12     
- Partials       16       17       +1     

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