chore: update issue template labels

.github/ISSUE_TEMPLATE/-------bug-report--.md

@@ -2,7 +2,7 @@
 name: 问题反馈 [ Bug report ]
 about: 提交问题帮助我们优化框架 （Create a report to help us improve）
 title: '[BUG] '
-labels: bug
+labels: 🐞 bug
 assignees: ''
 ---
 

.github/ISSUE_TEMPLATE/-------feature-request--.md

@@ -2,7 +2,7 @@
 name: 功能需求 [ Feature request ]
 about: 提一些建设性的建议或功能需求（Suggest an idea for this project）
 title: '[FEATURE] '
-labels: feature
+labels: 🎨 feature
 assignees: ''
 ---
 

.github/ISSUE_TEMPLATE/-------pre-release--.md

@@ -2,7 +2,7 @@
 name: 预览版本发布 [ Pre-Release ]
 about: 用于发布 pre-release 版本（Used to release the preview version）
 title: OpenSumi Pre-Release
-labels: pre-release
+labels: ⛵️ pre-release
 assignees: ''
 ---
 

.github/ISSUE_TEMPLATE/-------question--.md

@@ -2,7 +2,7 @@
 name: 提问 [ Question ]
 about: 提交对于框架的一些疑问寻求帮助 （Create a question issue）
 title: '[Question] '
-labels: question
+labels: 💬 question
 assignees: ''
 ---