Start upgrading grouping algorithm to be more performant in python

pycar/src/car/tracking/algorithms.py

@@ -1,4 +1,5 @@
 import math
+import numpy as np
 
 
 class Group:
@@ -134,6 +135,17 @@ def calc_groups(scan):
 
     return allGroups
 
+def calc_groups_edge_algorithm(scan):
+    """
+    Calculates groups using an edge algorithm. This takes advantage of numpy arrays
+    and vectorisation, rather than the primitive python loop grouping, resulting in
+    faster grouping speeds.
+    """
+    allGroups = []
+    scanArray = np.array(scan)
+
+def edge_algorithm():
+    pass
 
 def find_centre(group):
     """