[Story] Update the Connection Class to use waypoints

[rkrishnasanka]

Description

Currently, the Connection class is very fragile. We need to update the class to be able to take advantage of the waypoints to auto compute all the connection paths, segments, etc.

Things to do:

• Ability to compute segments from wayPoints, paths Error in recomputing breaks when multipath channels are present #425
• Ability to edit, delete, add new paths Moving single connection nodes #141
• Ability to break existing intersections of paths to insert a node Moving single connection nodes #141 [Story] Allow user to choose between inserting NODE or merging the channel #315
• Ability to work with curved channels Ability to create curved channels #371

Additional Description:

This will require us to:

1. Change the base data structures we are using for connections and all the dependent computing classes

Acceptance Criteria:

• Unit Test

[rkrishnasanka]

This comment in the pr also is connected to this : https://github.com/CIDARLAB/3DuF/pull/427/files#r742068913