js: Add sqlite interface
Improve sqlite debugging a bit (better logging)
js: Make showtime.trace() convert objects to JSON before printing
Split out async net I/O out form http_server.c into a subsystem it its own
Add virtual file system

Bookmarks can be exported into the VFS and then form
a unified list av all exported bookmarks which than can
be exposed in as a file system of its own.

Used for upcoming FTP server
fa: Add fa_scandir2()
Add FTP server support.

Can be enabled in Settings -> Network settings