Add RVDSS endpoint and client support

[nmdefries]

Summary:

Add RVDSS endpoint and client support (only added python, not R or JS).

Prerequisites:

• Unless it is a documentation hotfix it should be merged against the dev branch
• Branch is up-to-date with the branch to be merged with, i.e. dev
• Build is successful
• Code is cleaned up and formatted

[nmdefries]

Need to

• Register endpoint with webapp.
• Add support for rvdss to API clients.
  • Added to epidatr
  • and epidatpy

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud