👥 add pr contributor workflow (umijs#2539)

.github/workflows/pr-checker.yml

@@ -0,0 +1,44 @@
+name: PullRequest Checker
+
+on:
+  pull_request_target:
+    types:
+      - closed
+    paths-ignore:
+      - 'docs/**'
+
+jobs:
+  read-file:
+    runs-on: ubuntu-latest
+    outputs:
+      require-result: ${{ steps.contributors.outputs.content }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Read contributors.json
+        id: contributors
+        uses: juliangruber/read-file-action@v1
+        with:
+          path: ./contributors.json
+
+  output-log:
+    runs-on: ubuntu-latest
+    needs: read-file
+    steps:
+      - name: contributors.json
+        run: echo "${{ needs.read-file.outputs.require-result }}"
+      - name: creator
+        run: echo "${{ github.event.pull_request.user.login }}"
+      - name: contains
+        run: echo "${{ contains(fromJSON(needs.read-file.outputs.require-result), github.event.pull_request.user.login) }}"
+      - name: merged
+        run: echo "${{ github.event.pull_request.merged }}"
+
+  check-merged:
+    runs-on: ubuntu-latest
+    needs: read-file
+    if: contains(fromJSON(needs.read-file.outputs.require-result), github.event.pull_request.user.login) == false && github.event.pull_request.merged == true
+    steps:
+      - uses: actions-cool/maintain-one-comment@v3
+        with:
+          body: 感谢 PR！如果有兴趣一起参与维护 Qiankun，可加入我们的 Qiankun Contributors 群。加入方式是先用钉钉扫下方二维码加我钉钉，记得注明 github id，然后我会拉你到群里。<br /><img src="https://mdn.alipayobjects.com/huamei_zvchwx/afts/img/A*beGTTId-5CMAAAAAAAAAAAAADuWEAQ/original" width="20%"/>

contributors.json

@@ -0,0 +1 @@
+["kuitos", "gongshun"]