feat: better state_handler

diceplayer/state/state_model.py

@@ -0,0 +1,10 @@
+from pydantic import BaseModel
+
+from diceplayer.config import PlayerConfig
+from diceplayer.environment import System
+
+
+class StateModel(BaseModel):
+    config: PlayerConfig
+    system: System
+    current_cycle: int