feanil/rtd update

[feanil]

• docs: Add a ReadTheDocs Config.
• docs: Add a requirements file to build the docs.
• chore: Run make upgrade
• docs: Add a basic sphinx build setup.
• docs: Correct some docs warnings.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (8145367) 95.08% compared to head (74c6421) 95.08%.
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2017   +/-   ##
=======================================
  Coverage   95.08%   95.08%           
=======================================
  Files         158      158           
  Lines       17429    17429           
  Branches     1626     1626           
=======================================
  Hits        16572    16572           
  Misses        642      642           
  Partials      215      215           

Flag	Coverage Δ
unittests	95.08% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[UsamaSadiq]

Merging the PR to resolve docs check failure on other PRs.

[UsamaSadiq]

Running make upgrade with Python 3.8 somehow downgraded the Sphinx version which caused the docs build to fail. Investigating the reason for the downgrade since we are currently using Python 3.8 in the package.