Rename the vertex finding functions, factorise the old and ComponentAccumulator config

Have renamed the top level functions for the configuration of the trigger vertexing and split the old configuration and the new component accumulator configuration in to two separate files ...

old configuration now uses

makeInDetTrigVertices() from InDetTrigVertices.py

The ComponentAccumulator configuration remains unchanged

The actual code in the new file InDetTrigVertices.py is simply that exact code that was in the previous configuration file, before it was split in two, so is not new code and as such does not need to be reviewed.