Add bens claude mesh visualizer to www

[soler91]

Added bens claude mesh visualizer modified to autoload mesh from symlink
accessed by going to http://printer-ip/mesh.html

mostly untested, copying the html file to www and making the symlink manually do work but don't know about this patch itself :)

[suchmememanyskill]

This won't work as is:

• rc.local is not appended to the firmware's rc.local
• rc local does not have a newline at the end of the file
• does patch.sh have the execute permission set? Otherwise it can't execute. No the patch planner does not do this for you.
• the patch is not enabled in the patch config