Support multiple staticDir entries in config

[byvide]

Fresh currently only supports a single staticDir in the config. I have a setup where I would like to serve static files from multiple directories - some shared between sites (eg robot.txt), some site specific (eg icons).

It would be helpful if staticDir could accept an array of paths, and Fresh would merge the contents.

{
   staticDir: ["static", "profile/siteA/static"]
}

Files from later entries should override earlier ones if there are conflicts.
This would eliminate the need for workarounds like manually copying files or such.

[MrSIHAB]

As of now, you can make multiple folders in the static folder and organize everything

[byvide]

It's generally not ideal to include unrelated files in the static folder that's being served - not a huge issue tho.

An alternative to merging multiple directories could be adding support for an exclude option in the config. That way, you'd keep a single static folder, but specify certain files or paths to exclude from being served.