Auto assign approver and maintainers to PRs (#1301)

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>

.github/auto_assign.yml

@@ -0,0 +1,25 @@
+# Set to true to add reviewers to pull requests
+addReviewers: false
+
+# Set to true to add assignees to pull requests
+addAssignees: true
+
+# Set to true to add assignees from different groups to pull requests
+useAssigneeGroups: true
+
+# A list of assignees, split into different groups, to be added to pull requests (GitHub user name)
+assigneeGroups:
+  approvers_maintainers:
+    - anuraaga
+    - bogdandrutu
+    - dmitryax
+    - james-bebbington
+    - jrcamp
+    - jpkrohling
+    - nilebox
+    - owais
+    - tigrannajaryan
+
+# A number of assignees added to the pull request
+# Set 0 to add all the assignees (default: 0)
+numberOfAssignees: 1

.github/workflows/auto-assign-owners.yml

@@ -0,0 +1,14 @@
+name: 'Auto Assign'
+on:
+  pull_request_target:
+    types: [opened]
+
+jobs:
+  add-owner:
+    runs-on: ubuntu-latest
+    steps:
+      - name: run
+        uses: kentaro-m/auto-assign-action@v1.1.2
+        with:
+          configuration-path: ".github/auto_assign.yml"
+          repo-token: '${{ secrets.GITHUB_TOKEN }}'