Add NovaSolver (interactive physics simulators) to Tools

[koiwata]

Hi! Proposing to add NovaSolver to the Tools section.

NovaSolver is a collection of 1,600+ interactive physics and engineering simulators that run entirely client-side in the browser. Many use core mathematical concepts (ODEs, PDEs, linear algebra, complex analysis, chaos theory, Fourier analysis) and would be useful for self-learners visualizing what they read.

A few representative examples for context:

• Lissajous figures: https://novasolver.jp/tools/lissajous.html
• Lorenz attractor: https://novasolver.jp/tools/lorenz-attractor.html
• Mohr's circle: https://novasolver.jp/tools/mohr-circle.html
• Heat diffusion 2D: https://novasolver.jp/tools/heat-diffusion.html
• Bifurcation diagram: https://novasolver.jp/tools/bifurcation-diagram.html

Source code (MIT): https://github.com/novasolver/physics-simulators

The site is free, no signup, no install. Multilingual (JA/EN/ZH).

Thanks for maintaining this list!