fix: Move import statements to the top of the file/

Author: comfuture

Diff for: src/mcp/server/fastmcp/server.py

@@ -19,6 +19,8 @@
 from pydantic import BaseModel, Field
 from pydantic.networks import AnyUrl
 from pydantic_settings import BaseSettings, SettingsConfigDict
+from starlette.applications import Starlette
+from starlette.routing import Mount, Route
 
 from mcp.server.fastmcp.exceptions import ResourceError
 from mcp.server.fastmcp.prompts import Prompt, PromptManager