mesh transmission material story

[vis-prime]

Why

MTM had no storybook

What

Adding simple example with torusknot geometry

Checklist

• [x] Documentation updated
• [x] Ready to be merged

[codesandbox-ci[bot]]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit e87d9c830765b2e1a8a312e7f915b126a09e1583:

Sandbox	Source
still-pine-b4mdjp	Configuration
Ground reflections and video textures	Configuration
arc-x-pmndrs-colors	Configuration

[github-actions[bot]]

:tada: This PR is included in version 1.5.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: