ENH: simplify code for searchableSurface topo sources

- shorter lookup names for more consistency

ENH: accept point1/point2 as alternative to p1/p2 for sources

- better alignment with searchable specification

- refactor so that cylinderAnnulus sources derive directly from
  cylinder sources (which handle an annulus as well).
  Accept radius or outerRadius as synonyms.

STYLE: noexcept on topoBitSet access methods

DOC: update description for geometricConstraint