Add export option to right panel

src/components/views/right_panel/RoomSummaryCard.tsx

@@ -279,6 +279,9 @@ const RoomSummaryCard: React.FC<IProps> = ({ room, onClose }) => {
             <Button className="mx_RoomSummaryCard_icon_settings" onClick={onRoomSettingsClick}>
                 {_t("Room settings")}
             </Button>
+            <Button className="mx_RoomSummaryCard_icon_export" onClick = {() => {}}>
+                {_t("Export chat")}
+            </Button>
         </Group>
 
         { SettingsStore.getValue(UIFeature.Widgets) && <AppsSection room={room} /> }

src/i18n/strings/en_EN.json

@@ -1790,6 +1790,7 @@
     "Show files": "Show files",
     "Share room": "Share room",
     "Room settings": "Room settings",
+    "Export chat": "Export chat",
     "Trusted": "Trusted",
     "Not trusted": "Not trusted",
     "%(count)s verified sessions|other": "%(count)s verified sessions",