change middleware to proxy to match conventions

middleware.ts

@@ -1,12 +0,0 @@
-import { NextResponse } from "next/server";
-import type { NextRequest } from "next/server";
-
-export function middleware(request: NextRequest) {
-    if (request.nextUrl.pathname === '/') {
-        return NextResponse.redirect(new URL('/fr', request.url));
-    }
-}
-
-export const config = {
-    matcher: '/',
-}