Add enum for player stats amount

This enum will be used in decision tree learning when creating examples.

src/AI/DecisionTrees/projectSpecificClasses/PlayerStatsValue.py

@@ -0,0 +1,8 @@
+from enum import Enum
+
+
+class PlayerStatsValue(Enum):
+    ZERO_TO_QUARTER = 0,
+    QUARTER_TO_HALF = 1,
+    HALF_TO_THREE_QUARTERS = 2,
+    THREE_QUARTERS_TO_FULL = 3