Move GenAI plugins to dedicated directory

frigate/genai/__init__.py

@@ -457,8 +457,8 @@ Guidelines:
 
 
 def load_providers() -> None:
-    package_dir = os.path.dirname(__file__)
-    for filename in os.listdir(package_dir):
+    plugins_dir = os.path.join(os.path.dirname(__file__), "plugins")
+    for filename in os.listdir(plugins_dir):
         if filename.endswith(".py") and filename != "__init__.py":
-            module_name = f"frigate.genai.{filename[:-3]}"
+            module_name = f"frigate.genai.plugins.{filename[:-3]}"
             importlib.import_module(module_name)

frigate/genai/plugins/__init__.py

@@ -0,0 +1 @@
+"""GenAI provider plugins."""

frigate/genai/plugins/azure-openai.py

@@ -10,7 +10,7 @@ from openai import AzureOpenAI
 
 from frigate.config import GenAIProviderEnum
 from frigate.genai import GenAIClient, register_genai_provider
-from frigate.genai.openai import _stats_from_openai_usage
+from frigate.genai.plugins.openai import _stats_from_openai_usage
 
 logger = logging.getLogger(__name__)