feat(xo-server/Xo): pass appDir, AppName and httpServer
feat(xo-server/Xo): pass appDir, AppName and httpServer

As done in xo-proxy.

This may allow sharing mixins in the future.

vatesfr/xo-web,vatesfr/xo-web,lmcro/xo-web,lmcro/xo-web,lmcro/xo-web