chore: restructure project directory and update Dockerfile paths

app/api/proxy/router.py

@@ -0,0 +1,21 @@
+from fastapi import APIRouter
+
+router = APIRouter(
+    prefix="/proxy",
+    tags=["Proxy"]
+)
+
+
+@router.get("/")
+async def list_proxies():
+    return
+
+
+@router.post("/")
+async def create_proxy():
+    return
+
+
+@router.put("/{proxy_port}/")
+async def edit_proxy():
+    return