Move all functions and classes currently available through lib/name and
libName to be under a single flat namespace in lib. This make
reorganising the lib namespace much simpler as the location of symbols
can move without breaking the consumers of lib.
The multi-entrypoint design was already problematic for the web plugin
system which couldn't effectively use it due to how webpack's shared
module system is awkward to set up with multiple entrypoints per package.
Add options to pass map seed, map exchange string, map gen settings
and/or map settings when creating a save either through the create save
request or the load scenario request.
Add readMapExchangeString to lib/factorio which parses and decodes the
data in Map Exchange into a format suitable for giving to the Factorio
server command line.
Cooldude2606