Added the sphinx-sitemap package to generate a xml sitemap for google

[IgorTatarnikov]

Before submitting a pull request (PR), please read the contributing guide.

Description

What is this PR

• [ ] Bug fix
• [x] Addition of a new feature
• [ ] Other

Why is this PR needed? Google is not indexing the default websites correctly. Generating a sitemap will provide google with all available url paths.

What does this PR do? Adds the sphinx-sitemap package to auto-generate a sitemap on build.

References

84

How has this PR been tested?

Code tested by building locally and inspecting the sitemap by eye.

Is this a breaking change?

No

Does this PR require an update to the documentation?

No

Checklist:

• [x] The code has been tested locally
• [x] The code has been formatted with pre-commit

Checklist:

• [x] The code has been formatted with pre-commit