Need events before and after the entire JSF lifecycle processing

In order to facilitate custom contexts and other extensions, it would be helpful
if there were events to mark the beginning and end of the JSF lifecycle.

PreExecuteLifecycleEvent
PostExecuteLifecycleEvent

This would enable bean/transaction/security creating/interception at a time that
is independent of phase listeners, which present ordering problems when users
create custom phase listeners, and also cause issues when dealing with exception
handling, since exception handlers are created outside of the faces lifecycle:

[https://jira.jboss.org/browse/SEAMFACES-42](https://jira.jboss.org/browse/SEAMFACES-42)
#### Environment
Operating System: Linux
Platform: PC
#### Affected Versions
[2.0]

The issue identifies the JSF lifecycle, phase listeners, and exception handlers as the relevant entry points. First map where lifecycle processing begins and ends, then define how pre- and post-lifecycle events should integrate and verify their ordering and exception behavior; done means both events consistently mark the full lifecycle.

Written by the indexing model from the issue text.