[ENH] Added a function to erase MRMLDisplayNode
Removed RemovePathModel function
[ENH] Added a slider bar
[ENH] Added a variable range for the slider bar
[ENH] Test codes to see tuples
[ENH] Added function to obtain point coordinates for displaying each needle path individually
[Modified] single path display was modified.
[BugFix]
[Updates] Updated UI
Update: