Remove legacy startup configuration files and web assets

- Deleted startup.json, startup.json.linux, and startup.json.windows files to streamline configuration management.
- Removed web.config file as part of the cleanup process.
- Deleted jellyfin.svg and its compressed versions from the API documentation.
- Removed custom CSS files for ReDoc and Swagger documentation, including their compressed versions.

publish/startup.json

@@ -1,14 +0,0 @@
-{
-  "_comment": "Jellyfin Startup Configuration - Windows defaults - using C:/ProgramData/jellyfin",
-  "_note": "These paths will be used unless overridden by environment variables or command-line arguments",
-  "_priority": "Command-line args \u003E Environment variables \u003E This file \u003E Built-in defaults",
-  "_examples": "See startup.linux.json or startup.windows.json in Resources/Configuration for other OS examples",
-  "Paths": {
-    "DataDir": "C:/ProgramData/jellyfin/data",
-    "ConfigDir": "C:/ProgramData/jellyfin/config",
-    "CacheDir": "C:/ProgramData/jellyfin/cache",
-    "LogDir": "C:/ProgramData/jellyfin/log",
-    "TempDir": "C:\\Users\\wjones\\AppData\\Local\\Temp\\jellyfin",
-    "WebDir": "C:/ProgramData/jellyfin/wwwroot"
-  }
-}