Add and clean proper objects for Polyline, Point2D, Circle

networks/geometry/Point2D.py

@@ -0,0 +1,16 @@
+from typing import Type
+
+
+class Point2D:
+    def __init__(self, x: int, y: int):
+        self.x = x
+        self.y = y
+
+    def copy(self):
+        return Point2D(self.x, self.y)
+
+    def coordinates(self):
+        return (self.x, self.y)
+
+    def __repr__(self):
+        return f"Point2D(x: {self.x}, y: {self.y})"