feat: Serve static assets of apps

packages/backend/src/apps/twitter/assets/favicon.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" aria-label="Twitter" role="img" viewBox="0 0 512 512">
+  <rect width="512" height="512" rx="15%" fill="#1da1f2"/>
+  <path fill="#fff" d="M437 152a72 72 0 01-40 12a72 72 0 0032-40a72 72 0 01-45 17a72 72 0 00-122 65a200 200 0 01-145-74a72 72 0 0022 94a72 72 0 01-32-7a72 72 0 0056 69a72 72 0 01-32 1a72 72 0 0067 50a200 200 0 01-105 29a200 200 0 00309-179a200 200 0 0035-37"/>
+</svg>

packages/backend/src/apps/twitter/info.ts

@@ -1,7 +1,10 @@
-{
+import appInfoType from '../../types/app-info';
+import appConfig from '../../config/app';
+
+const appInfo: appInfoType = {
   "name": "Twitter",
   "key": "twitter",
-  "iconUrl": "https://automatisch.io/apps/twitter.png",
+  "iconUrl": `${appConfig.baseUrl}/apps/twitter/assets/favicon.svg`,
   "docUrl": "https://automatisch.io/docs/twitter",
   "primaryColor": "2DAAE1",
   "fields": [
@@ -113,3 +116,5 @@
     }
   ]
 }
+
+export default appInfo;