[FEATURE] Update the "online grayskull " tool website

[ForgottenProgramme]

End Result

• the grayskull website can be used to generate CRAN recipes as well
• Presently the website asks for project name and version. Now that we support CRAN also, the website should first ask repository (CRAN or PyPI), then project name and version

[marcelotrevisani]

yeah, that needs some work, but it will not be my priority for now. I would rather focus on adding support for poetry and flint first, after that I can rework the webapi.

[bollwyvl]

A semi-crazy direction to go would be getting the whole grayskull shooting match running in the browser under WASM,
and hosting on a simple static ReadTheDocs page or GitHub pages. This would shift much of the burden from a backend process to CDN-mirrored static assets.

Either pyodide or xeus-python and emscripten-forge could likely do the job.

The only missing dep from pyodide, at present is rapidfuzz, which appears to also be missing from emscripten-forge. Getting it into one of those channels probably wouldn't be a huge lift, but then maybe having rapidfuzz be hidden behind a conditional dependency, and having a fallback pure-python implementation would get it sorted faster.

At present, pyodide's solver already relies on the PyPI JSON API, so no worries there, but as the CRAN integration is scraping-based, it would likely cause more issues when actually running.