Added the built int functions registry

Still lots to do tho

playbook/action_registry/__init__.py

@@ -0,0 +1,46 @@
+from dataclasses import dataclass
+from playbook.models import StepLog
+from typing import Callable, Dict, Any
+
+
+ActionFn = Callable[[Dict[str, Any], str], StepLog]
+
+
+@dataclass
+class Action(object):
+    name: str
+    fn: ActionFn
+    ver: str
+
+
+class ActionRegistry:
+    def __init__(self, name: str):
+        self.name: str = name
+        self.__actions = {}
+
+    def register(self, name: str, version: str):
+        """Decorator to register python functions with a name and version."""
+        def decorator(function: ActionFn):
+            if name not in self.__actions:
+                self.__actions[name] = {}
+
+            self.__actions[name][version] = function
+            return function
+
+        return decorator
+    
+    def get(self, name: str, ver: str) -> ActionFn:
+        if name not in self.__actions:
+            raise ValueError(f"Action '{name}' is not registered in registry '{self.name}'")
+        
+        versions_dict = self.__actions[name]
+        if not versions_dict:
+            raise ValueError(f"No registered versions found for function '{name}'")
+
+        if ver == "*":
+            return next(iter(versions_dict.values()))
+
+        if ver not in self.__actions[name]:
+            raise ValueError(f"Version '{ver}' is not registered for function '{name}'")
+
+        return versions_dict[ver]

playbook/action_registry/unittests/test_action_registry.py

@@ -0,0 +1,13 @@
+import os
+import unittest
+from a import ActionRegistry
+
+
+CDIR = os.path.dirname(__file__)
+
+
+class TestActionRegistry(unittest.TestCase):
+    def test_creating_action_registry(self):
+        reg: ActionRegistry = ActionRegistry("test_registry")
+
+        self.assertEqual(reg.name, "test_registry")