Feature request: Add support for specifying packages in URL query string

[rempsyc]

I don't know if this is possible with a shiny app, but I was wondering if it would be possible to change the default package based on a URL query strings, e.g., https://shinyus.ipub.com/cranview?packages=rempsyc,lavaanExtra

For example, when linking to the shiny app from our pkgdown sites, it would be very useful if users landed directly on the right package being demoed, saving them one extra step having to type in the packages. Thanks,