server : (webui) revamp the input area, plus many small UI improvements (#13365)

* rework the input area

* process selected file

* change all icons to heroicons

* fix thought process collapse

* move conversation more menu to sidebar

* sun icon --> moon icon

* rm default system message

* stricter upload file check, only allow image if server has mtmd

* build it

* add renaming

* better autoscroll

* build

* add conversation group

* fix scroll

* extra context first, then user input in the end

* fix <hr> tag

* clean up a bit

* build

* add mb-3 for <pre>

* throttle adjustTextareaHeight to make it less laggy

* (nits) missing padding in sidebar

* rm stray console log

tools/server/webui/src/utils/common.tsx

@@ -36,3 +36,32 @@ export const OpenInNewTab = ({
     {children}
   </a>
 );
+
+export function BtnWithTooltips({
+  className,
+  onClick,
+  onMouseLeave,
+  children,
+  tooltipsContent,
+  disabled,
+}: {
+  className?: string;
+  onClick: () => void;
+  onMouseLeave?: () => void;
+  children: React.ReactNode;
+  tooltipsContent: string;
+  disabled?: boolean;
+}) {
+  return (
+    <div className="tooltip tooltip-bottom" data-tip={tooltipsContent}>
+      <button
+        className={`${className ?? ''} flex items-center justify-center`}
+        onClick={onClick}
+        disabled={disabled}
+        onMouseLeave={onMouseLeave}
+      >
+        {children}
+      </button>
+    </div>
+  );
+}