new issue greeting workflow

.github/workflows/issue_geetings.yml

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+on:
+  issues:
+    types: [labeled]
+
+jobs:
+  create-comment:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create comment for enhancement
+        if: github.event.label.name == 'enhancement'
+        uses: actions-cool/issues-helper@v3
+        with:
+          actions: 'create-comment'
+          token: ${{ secrets.GITHUB_TOKEN }}
+          body: |
+            你好 @${{ github.event.issue.user.login }}，我们已经记录了你的新功能提议。如果你有任何具体的实现想法或设计草图，欢迎随时分享给我们。
+          emoji: 'eyes'
+
+      - name: Create comment for bug
+        if: github.event.label.name == 'bug'
+        uses: actions-cool/issues-helper@v3
+        with:
+          actions: 'create-comment'
+          token: ${{ secrets.GITHUB_TOKEN }}
+          body: |
+            你好 @${{ github.event.issue.user.login }}，看来我们的代码不小心打了个盹儿。别担心，我们已经唤醒了开发团队，他们正快马加鞭地赶来修复！🔨🐞
+          emoji: 'eyes'

.github/workflows/issue_similarity.yml

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+# 问题相似性分析
+name: Issues Similarity Analysis
+
+on:
+  issues:
+    types: [opened, edited]
+
+jobs:
+  similarity-analysis:
+    runs-on: ubuntu-latest
+    steps:
+      - name: analysis
+        uses: actions-cool/issues-similarity-analysis@v1
+        with:
+          filter-threshold: 0.5
+          comment-title: '### 似乎有相似的问题'
+          comment-body: '${index}. ${similarity} #${number}'
+          show-footer: false
+          show-mentioned: true
+          since-days: 730

.github/workflows/issue_welcome.yml

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+name: Issue Welcome
+
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  issue-welcome:
+    runs-on: ubuntu-latest
+    steps:
+      - name: welcome
+        uses: actions-cool/issues-helper@v3
+        with:
+          actions: 'welcome'
+          token: ${{ secrets.GITHUB_TOKEN }}
+          body: 你好 @${{ github.event.issue.user.login }}，我们注意到你是一次创建问题，感谢你的加入！我们非常期待你的想法和贡献。🌟
+          issue-emoji: 'eyes'