A way to run a local HTTP server

[mortenpi]

Ideally, there would be a simple way to serve the build docs as a web page locally. This way the pretty URLs would be less of a problem for reading the docs locally. Possibly using HttpServer.jl.

A more advanced implementation might look up all the packages in the current environment and (if possible), serve the HTML docs for all of them.

[mortenpi]

There is LiveServer.jl for this.