Improve usage examples

[osiux]

Hi! I'm debugging some things with the lib and wanted to use the examples for this, but building or using it for dev (npm run dev inside usage) was taking so much time, so I made a few changes:

• Uses vite for building usage
• When selecting a demo, store it in query param so on refresh you are back to the same demo
• Running npm run dev on root folder puts rollup on watch mode, this allows to make changes and see it instantly on the usage examples.

Only difference I see at first glance from current examples is with the Geometry/PolyDataViewer, but not sure if current one is fine or new one is how it should look. If new one is wrong and you like this change I can try to find what is happening.

Note: This is not a must have change, but it's been pretty helpful to me while testing the library with the examples.

Current:

New:

[floryst]

I did a quick passthrough, and it looks reasonable to me. Off the top of my head, the differences in the PolyDataViewer seem to be related to whichever representation configuration is set. I'm good to merge this and figure that out later, since it's not that much of a critical thing in my opinion.

[jourdain]

I let you handle the merge @floryst since you are playing with that project more lately. ;-)

[jourdain]

:tada: This PR is included in version 1.11.0 :tada:

The release is available on:

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

Your semantic-release bot :package::rocket: