Add all routes the web interface is served on to the express app and
serve the index.html file on. Due to the index html not knowing which
path it's hosted under, a path to the root of the web interface is
replaced using string substitution from the master server.
Replace usage of .constructor.name with a separate property to avoid
issue with JavaScript terser mangling the class name during minification
for the web build.
Set up webpack for the master server's web interface and fix the issues
from the imported interface source files. The .jsx files in
package/master/web are bundled together into package/master/static and
served by the master server via express.
Make the config and link libraries compatible with packing for web with
webpack. This would fail due to ws not being web compatible and config
using a node function not available in the web shim for util.
Split up codebase into the packages @clsterio/lib, @clusterio/master,
@clusterio/slave, and @clusterio/ctl using lerna to manage them. This
will allow deployment to use only the parts needed reducing install
size, and better separate the code into shared library, master, slave
and control.