[GSoC] Joint images to SVG

[tjstienstra]

References to other Issues or PRs

Improves #23730

Brief description of what is fixed or changed

This PR replaces the PNG images introduced in #23730 for SVG, which have a small file size.

Other comments

Release Notes

• other
  • Replace PNG joint images for SVG

[sympy-bot]

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Hi, I am the SymPy bot (v167). I'm here to help you write a release notes entry. Please read the guide on how to write release notes.

Your release notes are in good order.

Here is what the release notes will look like:

• other
  • Replace PNG joint images for SVG (#23890 by @TJStienstra)

This will be added to https://github.com/sympy/sympy/wiki/Release-Notes-for-1.12.

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#### References to other Issues or PRs
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Improves #23730


#### Brief description of what is fixed or changed
This PR replaces the PNG images introduced in #23730 for SVG, which have a small file size.

#### Other comments


#### Release Notes

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  * Added a new solver for logarithmic equations.

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* other
   * Replace PNG joint images for SVG
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Update

The release notes on the wiki have been updated.

[sympy-bot]

🟠

Hi, I am the SymPy bot (v167). I've noticed that some of your commits add or delete files. Since this is sometimes done unintentionally, I wanted to alert you about it.

This is an experimental feature of SymPy Bot. If you have any feedback on it, please comment at sympy/sympy-bot#75.

The following commits delete files:

• 997a590:
  • doc/src/modules/physics/mechanics/api/PinJoint.png
  • doc/src/modules/physics/mechanics/api/PrismaticJoint.png

If these files were added/deleted on purpose, you can ignore this message.

[tjstienstra]

@moorepants here is the PR, which should satisfy your request.

@sidhu1012 @brocksam

[github-actions]

Benchmark results from GitHub Actions

Lower numbers are good, higher numbers are bad. A ratio less than 1
means a speed up and greater than 1 means a slowdown. Green lines
beginning with + are slowdowns (the PR is slower then master or
master is slower than the previous release). Red lines beginning
with - are speedups.

Significantly changed benchmark results (PR vs master)

Significantly changed benchmark results (master vs previous release)

Full benchmark results can be found as artifacts in GitHub Actions
(click on checks at the top of the PR).

[smichr]

This looks nice. If other changes need to be made a new issue can be opened. Thank you.