docs: Install with conan doc pages

[MikeRavenelle]

trafficstars

Documentation for conan support.

• Added conan install documentation and modified section to include it.

Documentation change checklist

• [ X] My documentation changes follow the docs style guide and any code examples follow the coding style guide.
• [X] I tested that my change works before raising the PR (via running doxygen, and testing examples).
• [X] I have not moved any existing pages or changed any existing URLs without strong justification as to why.
• [X] I have not generated content using AI or a desktop utility such as grammarly.

[github-actions[bot]]

Thank you for your contribution, but PRs must be raised against the dev branch. Please log your pull request against the dev branch not master. You can also retarget this pull request, then reopen it.

[braindigitalis]

reopened and targeted at dev

[Jaskowicz1]

Renamed PR to correctly align with our conventions.

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