Add most basic Asset support for models (#11315)

* Brought over minimal elements from PR 10045 to reproduce seed_assets and register_assets_system without adding anything to the DB or server routes yet, for now making everything sync (can introduce async once everything is cleaned up and brought over)

* Added db script to insert assets stuff, cleaned up some code; assets (models) now get added/rescanned

* Added support for 5 http endpoints for assets

* Replaced Optional with | None in schemas_in.py and schemas_out.py

* Remove two routes that will not be relevant yet in this PR: HEAD /api/assets/hash/<hash> and PUT /api/assets/<id>/preview

* Remove some functions the two deleted endpoints were using

* Don't show assets scan message upon calling /object_info endpoint

* removed unsued import to satisfy ruff

* Simplified hashing function tpye hint and _hash_file_obj

* Satisfied ruff

main.py

@@ -7,6 +7,7 @@ import folder_paths
 import time
 from comfy.cli_args import args
 from app.logger import setup_logger
+from app.assets.scanner import seed_assets
 import itertools
 import utils.extra_config
 import logging
@@ -324,6 +325,8 @@ def setup_database():
         from app.database.db import init_db, dependencies_available
         if dependencies_available():
             init_db()
+            if not args.disable_assets_autoscan:
+                seed_assets(["models"], enable_logging=True)
     except Exception as e:
         logging.error(f"Failed to initialize database. Please ensure you have installed the latest requirements. If the error persists, please report this as in future the database will be required: {e}")