add pr_dns.yml

.github/workflows/pr_dns.yml

@@ -0,0 +1,27 @@
+name: Check dns api
+
+on:
+  pull_request_target:
+    types:
+      - opened
+    branches:
+      - 'dev'
+    paths:
+      - 'dnsapi/*.sh'
+
+
+jobs:
+  welcome:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            await github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: `**Welcome**
+                Please make sure you're read our [dns api guide](.github/dns_api_pr.md) and we look forward to reviewing your Pull request shortly ✨`
+            })
+