ENH: additional PtrListOps to simplify gathering information

- get: uses access operation to get values for each list item
  Example,
  PtrListOps::get(mesh.boundaryMesh(), nameOp<polyPatch>());

- names: the name() of each list item filtered for matches

- firstMatching: index of first item with a matching name()

- findMatching: indices of items with a matching match name()
  Example,
  PtrListOps::findMatching(mesh.boundaryMesh(), wordRes( ... ));

STYLE: deprecate transitional getNameOp, getTypeOp

- use nameOp, typeOp (word.H) instead