share connect update hot-reload logic with tomcat dev mode

The nuxeo-runtime-reload is taking in charge hot-reloading of studio projects with all flush management required. The goals is to re-use this logic in tomcat dev-mode (dev-mode is used by the IDE for hot-reloading bundles).

Another goal is to take in charge in server side of the hot-deployment of resources. We're going to introduce new types of dev bundles : seam and resourcebundle in the nuxeo-runtime-tomcat-adapter. Seam classes are copied in the WEB-INF/dev folder and resource bundles are appended to the WEB-INF/classes resource bundles.

At this time, only the copy of web resources are shared with the nuxeo-runtime-reload component.