create an mvn archetype:list-archetypes command

Provide an mvn archetype:list or archetype:list-archetypes (or whatever else you would prefer to name it) that outputs a list of all available archetypes without asking us any other question. Such a command would allow users to use the grep command to find archetypes within their sphere of interest, e.g.: mvn archetype:list | grep cxf will output CXF-related archetypes.

Note this presently works with mvn archetype:generate | grep cxf but as the former command expects input the command hangs after outputting the result.