Merge agents and actions branches + fix import / subclass errors

src/primaite/game/agent/actions/abstract.py

@@ -0,0 +1,36 @@
+# © Crown-owned copyright 2025, Defence Science and Technology Laboratory UK
+from __future__ import annotations
+
+from abc import ABC
+from typing import Any, ClassVar, Dict, Optional, Type
+
+from pydantic import BaseModel, ConfigDict
+
+from primaite.interface.request import RequestFormat
+
+
+class AbstractAction(BaseModel, ABC):
+    """Base class for actions."""
+
+    config: "AbstractAction.ConfigSchema"
+
+    class ConfigSchema(BaseModel, ABC):
+        """Base configuration schema for Actions."""
+
+        model_config = ConfigDict(extra="forbid")
+        type: str
+
+    _registry: ClassVar[Dict[str, Type[AbstractAction]]] = {}
+
+    def __init_subclass__(cls, identifier: Optional[str] = None, **kwargs: Any) -> None:
+        super().__init_subclass__(**kwargs)
+        if identifier is None:
+            return
+        if identifier in cls._registry:
+            raise ValueError(f"Cannot create new action under reserved name {identifier}")
+        cls._registry[identifier] = cls
+
+    @classmethod
+    def form_request(cls, config: ConfigSchema) -> RequestFormat:
+        """Return the action formatted as a request which can be ingested by the PrimAITE simulation."""
+        pass