Documentation updates

[JWCook]

Updates #432

• Update issue and PR templates
• Only link to stable release docs
• Hide list of release versions from main page toctree
• Use sphinx-design dropdown instead of custom toggle class
• Add OpenGraph metadata
• Include class summary in automodule docs
• Split user guide into basic and advanced usage
• Add user guide for API client class

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (80bd3a1) 96.35% compared to head (568be52) 96.35%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #526 +/- ## ======================================= Coverage 96.35% 96.35% ======================================= Files 58 58 Lines 3294 3296 +2 Branches 643 643 ======================================= + Hits 3174 3176 +2 Misses 88 88 Partials 32 32 ```

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