Config: Migrate to global class instead of dicts

The config categories can have defined separation, but preserve
the dynamic nature of adding new config options by making all the
internal class vars as dictionaries.

This was necessary since storing global callbacks stored a state
of the previous global_config var that wasn't populated.

Signed-off-by: kingbri <bdashore3@proton.me>

common/model.py

@@ -10,9 +10,9 @@ from fastapi import HTTPException
 from loguru import logger
 from typing import Optional
 
-from common import config
 from common.logger import get_loading_progress_bar
 from common.networking import handle_request_error
+from common.tabby_config import config
 from common.utils import unwrap
 from endpoints.utils import do_export_openapi
 
@@ -153,8 +153,7 @@ async def unload_embedding_model():
 def get_config_default(key: str, model_type: str = "model"):
     """Fetches a default value from model config if allowed by the user."""
 
-    model_config = config.model_config()
-    default_keys = unwrap(model_config.get("use_as_default"), [])
+    default_keys = unwrap(config.model.get("use_as_default"), [])
 
     # Add extra keys to defaults
     default_keys.append("embeddings_device")
@@ -162,13 +161,11 @@ def get_config_default(key: str, model_type: str = "model"):
     if key in default_keys:
         # Is this a draft model load parameter?
         if model_type == "draft":
-            draft_config = config.draft_model_config()
-            return draft_config.get(key)
+            return config.draft_model.get(key)
         elif model_type == "embedding":
-            embeddings_config = config.embeddings_config()
-            return embeddings_config.get(key)
+            return config.embeddings.get(key)
         else:
-            return model_config.get(key)
+            return config.model.get(key)
 
 
 async def check_model_container():