修复丢失的api；重新规划api结构

app/api/v1/endpoints/schemes.py

@@ -0,0 +1,17 @@
+from fastapi import APIRouter
+from typing import Any, List, Dict
+from app.services.tjnetwork import get_scheme_schema, get_scheme, get_all_schemes
+
+router = APIRouter()
+
+@router.get("/getschemeschema/")
+async def fastapi_get_scheme_schema(network: str) -> dict[str, dict[Any, Any]]:
+    return get_scheme_schema(network)
+
+@router.get("/getscheme/")
+async def fastapi_get_scheme(network: str, schema_name: str) -> dict[Any, Any]:
+    return get_scheme(network, schema_name)
+
+@router.get("/getallschemes/")
+async def fastapi_get_all_schemes(network: str) -> list[dict[Any, Any]]:
+    return get_all_schemes(network)