✨ Feature: add server response headers for CORS (#939)

Co-authored-by: long <iamlongalong@gmail.com>

src/main/server/index.ts

@@ -39,13 +39,19 @@ class Server {
   }
 
   private handleRequest = (request: http.IncomingMessage, response: http.ServerResponse) => {
+    if (request.method === 'OPTIONS') {
+      handleResponse({
+        response
+      })
+      return
+    }
+    
     if (request.method === 'POST') {
       if (!routers.getHandler(request.url!)) {
         logger.warn(`[PicGo Server] don't support [${request.url}] url`)
         handleResponse({
           response,
           statusCode: 404,
-          header: {},
           body: {
             success: false
           }

src/main/server/utils.ts

@@ -4,7 +4,10 @@ export const handleResponse = ({
   response,
   statusCode = 200,
   header = {
-    'Content-Type': 'application/json'
+    'Content-Type': 'application/json',
+    'access-control-allow-headers': '*',
+    'access-control-allow-methods': 'POST, GET, OPTIONS',
+    'access-control-allow-origin': '*'
   },
   body = {
     success: false