feat: add chat export button

web/src/assets/iconfont/iconfont.css

@@ -1,8 +1,8 @@
 @font-face {
   font-family: "iconfont"; /* Project id 4125778 */
-  src: url('iconfont.woff2?t=1687341905766') format('woff2'),
-       url('iconfont.woff?t=1687341905766') format('woff'),
-       url('iconfont.ttf?t=1687341905766') format('truetype');
+  src: url('iconfont.woff2?t=1691029402206') format('woff2'),
+       url('iconfont.woff?t=1691029402206') format('woff'),
+       url('iconfont.ttf?t=1691029402206') format('truetype');
 }
 
 .iconfont {
@@ -13,6 +13,10 @@
   -moz-osx-font-smoothing: grayscale;
 }
 
+.icon-export:before {
+  content: "\e791";
+}
+
 .icon-sub-menu:before {
   content: "\e86b";
 }

web/src/assets/iconfont/iconfont.json

@@ -5,6 +5,13 @@
   "css_prefix_text": "icon-",
   "description": "",
   "glyphs": [
+    {
+      "icon_id": "4765958",
+      "name": "export",
+      "font_class": "export",
+      "unicode": "e791",
+      "unicode_decimal": 59281
+    },
     {
       "icon_id": "6343824",
       "name": "menu",