[Issue 753] - Implement WebSocketContainer#upgradeHttpToWebSocket

[Issue 754] - Allow to add an Endpoint after the Init phase

[Issue 755] - Add JPMS support

[Pull 756] - Implementation of 2.1 ServerContainer#upgradeHttpToWebSocket

[Pull 760] - Add module-infos.

[Pull 763] - Allow EE10 JAX-B, CDI, and Servlet APIs