docs: add RTD required config

[dpgaspar]

Description

Add readthedocs required config: https://blog.readthedocs.com/migrate-configuration-v2/

ADDITIONAL INFORMATION

• Has associated issue:
• Is CRUD MVC related.
• Is Auth, RBAC security related.
• Changes the security db schema.
• Introduces new feature
• Removes existing feature

[codecov]

Codecov Report

Merging #2135 (3b01a4c) into master (38180b0) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2135   +/-   ##
=======================================
  Coverage   78.66%   78.66%           
=======================================
  Files          72       72           
  Lines        8686     8686           
=======================================
  Hits         6833     6833           
  Misses       1853     1853           

Flag	Coverage Δ
python	78.66% <ø> (ø)

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