[skip ci] refactor: proxy -> middleware

src/types/types.ts

@@ -1,3 +1,18 @@
 import { Plugin } from '@typings/plugin';
 
 export type PluginList = Record<string, Plugin.PluginItem[]>;
+
+export enum FetchMode {
+  PROXY,
+  NODE_FETCH,
+  CURL,
+}
+
+export interface ServerSetting {
+  CLIENT_HOST: string;
+  fetchMode: FetchMode;
+  cookies?: string;
+  disAllowedRequestHeaders: string[];
+  disAllowResponseHeaders: string[];
+  useUserAgent: boolean;
+}