Add documentation to params.yaml

[kislaykishore]

Description

This will guide devs on how to add new params.
I've purposely excluded hide-shorthand and shorthand features because we are not sure whether or how they will be supported.

Link to the issue in case of a bug fix.

NA

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - NA

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.85%. Comparing base (19deef4) to head (68fc7b6).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2010      +/-   ##
==========================================
+ Coverage   71.82%   71.85%   +0.03%     
==========================================
  Files          97       97              
  Lines       10636    10636              
==========================================
+ Hits         7639     7643       +4     
+ Misses       2658     2655       -3     
+ Partials      339      338       -1     

Flag	Coverage Δ
unittests	71.85% <ø> (+0.03%)	⬆️

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