feat: allow users to use the app icon as the answer icon (#7888)

Co-authored-by: crazywoola <427733928@qq.com>

web/app/components/base/answer-icon/index.tsx

@@ -0,0 +1,47 @@
+'use client'
+
+import type { FC } from 'react'
+import { init } from 'emoji-mart'
+import data from '@emoji-mart/data'
+import classNames from '@/utils/classnames'
+import type { AppIconType } from '@/types/app'
+
+init({ data })
+
+export type AnswerIconProps = {
+  iconType?: AppIconType | null
+  icon?: string | null
+  background?: string | null
+  imageUrl?: string | null
+}
+
+const AnswerIcon: FC<AnswerIconProps> = ({
+  iconType,
+  icon,
+  background,
+  imageUrl,
+}) => {
+  const wrapperClassName = classNames(
+    'flex',
+    'items-center',
+    'justify-center',
+    'w-full',
+    'h-full',
+    'rounded-full',
+    'border-[0.5px]',
+    'border-black/5',
+    'text-xl',
+  )
+  const isValidImageIcon = iconType === 'image' && imageUrl
+  return <div
+    className={wrapperClassName}
+    style={{ background: background || '#D5F5F6' }}
+  >
+    {isValidImageIcon
+      ? <img src={imageUrl} className="w-full h-full rounded-full" alt="answer icon" />
+      : (icon && icon !== '') ? <em-emoji id={icon} /> : <em-emoji id='🤖' />
+    }
+  </div>
+}
+
+export default AnswerIcon