build: Auto assign (#46)

* build: auto assign

* update: add permissions

.github/workflows/auto-asign.yml

@@ -0,0 +1,28 @@
+name: Auto assign ✌️
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  assign:
+    if: |
+      github.event.pull_request.user.type == 'User'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+    timeout-minutes: 5
+    steps:
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            const assignees = context.payload.pull_request.assignees
+            if (!assignees || assignees.length === 0) {
+              github.rest.issues.addAssignees({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                assignees: `${{ github.actor }}`,
+              })
+            }