Proper stream parsing in glvis-js

[najlkin]

This PR unifies handling of streams in JS and glvis app to enable all stream commands, resolving #315. Moreover, it introduces animations, i.e., time series of solutions.

⭐ bonus:

• Fixed compilation with emscripten on Mac to not use CGL

↪️ dependencies:

• EGL headless visualization #336

[najlkin]

To be clear, this PR enables general processing, but we cannot distinguish between files and streams in aux_js.cpp, where waiting for the latter would stop the visualization. The method display() just simply executes all commands from the stream as it worked so far, which does not allow animations really. It would be easy to extend, but it requires changes on the side of glvis-js.

[najlkin]

This is glvis-js compilation with the latest commit: https://github.com/GLVis/glvis-js/actions/runs/21537548572 (branch ci-build-21537548572). Please test if everything works as intended in glvis-js 👈

[tzanio]

@najlkin can you resolve conflict?

Also, should this be mentioned in CHANGELOG?

[najlkin]

Done 👍 The latest compilation of glvis-js: https://github.com/GLVis/glvis-js/actions/runs/21602577550 (branch ci-build-21602577550). Please test if everything works as intended in glvis-js 👈

[najlkin]

I just managed to make running and test glvis-live and it works perfectly, actually better than master, which does not load correctly the new test/example ex6-dofs-numbering.saved (due to unsupported commands) 👍 .

[justinlaughlin]

Tested and it looks good to me!

[tzanio]

I also tested and looks look good, thanks @najlkin !