Added new logo (#103)

public/main.ts

@@ -1,6 +1,7 @@
 import './style.css';
 import './style.scss';
-import './favicon.svg';
+import './favicon-32.png';
+import './opengist.svg';
 import './default.png';
 import dayjs from 'dayjs';
 import relativeTime from 'dayjs/plugin/relativeTime';