Update setup.py

[curita]

Made some changes in setup.py to add some extra details to Spidermon's PyPI page.

1. Used the existing README as the Project description of the library
2. Added "Documentation", "Source", "Tracker" and "Release notes" as additional Project links.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.58%. Comparing base (de69215) to head (7b32e9c).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #458   +/-   ##
=======================================
  Coverage   79.58%   79.58%           
=======================================
  Files          76       76           
  Lines        3242     3242           
  Branches      321      321           
=======================================
  Hits         2580     2580           
  Misses        593      593           
  Partials       69       69           

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