[ENH] Implement Proximity Forest 2.0 classifier using aeon distances

aeon/classification/distance_based/__init__.py

@@ -5,10 +5,16 @@
     "KNeighborsTimeSeriesClassifier",
     "ProximityTree",
     "ProximityForest",
+    "ProximityTree2",
+    "ProximityForest2",
 ]
 
 from aeon.classification.distance_based._elastic_ensemble import ElasticEnsemble
 from aeon.classification.distance_based._proximity_forest import ProximityForest
+from aeon.classification.distance_based._proximity_forest_2 import (
+    ProximityForest2,
+    ProximityTree2,
+)
 from aeon.classification.distance_based._proximity_tree import ProximityTree
 from aeon.classification.distance_based._time_series_neighbors import (
     KNeighborsTimeSeriesClassifier,