[PostGIS] #5848: expose a lower level function of TopoGeo_AddLineString that returns more info

[PostGIS]

#5848: expose a lower level function of TopoGeo_AddLineString that returns more
info
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  Reporter:  Lars Aksel Opsahl  |      Owner:  strk
      Type:  enhancement        |     Status:  new
  Priority:  medium             |  Milestone:  PostGIS 3.5.3
 Component:  topology           |    Version:  3.4.x
Resolution:                     |   Keywords:
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Comment (by strk):

 The most time consuming part would be defining a clear specification for
 the function - what details to return for each possible operation - and
 making sure that those details would be enough to solve your problem.

 As stated:
 > The problem is that we now have lost control of what edges representing
 line from table "one", because edge 1 has been split into two new edges as
 side effect.

 The problem is specifically solved by using TopoGeometry.

 Are you sure you could make your calling function faster than TopoGeometry
 handling if you have the split information ? If so, would it be worth
 improving TopoGeometry handling instead ?
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5848#comment:7>
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