Fix ESLint errors for CI build

- Remove unused HeartFilled import from Footer.tsx
- Remove unused MenuOutlined import from Header.tsx
- Remove unused PlayCircleOutlined import from Hero.tsx
- Resolves CI build failure caused by treating warnings as errors
- Build now passes without any ESLint warnings

Author: CC11001100

src/components/Footer/Footer.tsx

@@ -4,8 +4,7 @@ import {
   GithubOutlined,
   TwitterOutlined,
   LinkedinOutlined,
-  MailOutlined,
-  HeartFilled
+  MailOutlined
 } from '@ant-design/icons';
 import { useTranslation } from 'react-i18next';
 import './Footer.css';

src/components/Header/Header.tsx

@@ -1,6 +1,5 @@
 import React from 'react';
 import { Layout, Menu, Button } from 'antd';
-import { MenuOutlined } from '@ant-design/icons';
 import { useTranslation } from 'react-i18next';
 import LanguageSwitcher from '../LanguageSwitcher/LanguageSwitcher';
 import GitHubBadge from '../GitHubBadge/GitHubBadge';

src/components/Hero/Hero.tsx

@@ -3,7 +3,6 @@ import { Button, Typography, Space, Badge } from 'antd';
 import {
   RocketOutlined,
   GithubOutlined,
-  PlayCircleOutlined,
   ThunderboltOutlined,
   BranchesOutlined,
   ClockCircleOutlined,