feat: Introduce configurable docs link and remove hardcoded chat links

- Added a new GeneralSetting struct to manage configurable docs link
- Removed hardcoded ChatLink and ChatLink2 variables across multiple files
- Updated frontend components to dynamically render docs link from status
- Simplified chat and link-related logic in various components
- Added a warning modal for quota per unit setting in operation settings

web/src/pages/Chat/index.js

@@ -10,10 +10,8 @@ const ChatPage = () => {
   const comLink = (key) => {
     // console.log('chatLink:', chatLink);
     if (!serverAddress || !key) return '';
-      let link = localStorage.getItem('chat_link');
-      if (link) {
-          link = `${link}/#/?settings={"key":"sk-${key}","url":"${encodeURIComponent(serverAddress)}"}`;
-      } else if (id) {
+      let link = "";
+      if (id) {
           let chats = localStorage.getItem('chats');
           if (chats) {
               chats = JSON.parse(chats);