ci(Mergify): configuration update

Signed-off-by: Nolan Le <null>

.mergify.yml

@@ -0,0 +1,56 @@
+pull_request_rules:
+  - name: Label Mergify Stacks PRs
+    description: Pull requests that are part of a Mergify stack should be labeled as such
+    conditions:
+      - "commits[0].commit_message ~= (?m)Change-Id:"
+    actions:
+      label:
+        toggle:
+          - stack
+  - name: Ping PR author when conflicting
+    description: Warn the pull request author when their PR are conflicting
+    conditions:
+      - conflict
+      - -closed
+    actions:
+      comment:
+        message: >
+          👋 {{author}} your PR is conflicting and needs to be updated to be
+          merged
+  - name: Add a queue label when PR is queued
+    description: Toggle the queue label when a pull request is (un)queued.
+    conditions:
+      - queue-position > 0
+    actions:
+      label:
+        toggle:
+          - merge-queued
+  - name: label changes from community
+    conditions:
+      - author≠@core-team
+      - author≠mergify[bot]
+      - author≠dependabot[bot]
+      - author≠github-actions[bot]
+    actions:
+      label:
+        add:
+          - community
+          - need:merge-assist
+  - name: Automatic merge (squash)
+    description: Merge when PR passes all branch protection and has label automerge
+    conditions:
+      - label = automerge
+    actions:
+      merge:
+        method: squash
+  - name: Request review from team
+    description: Request review from a specific team when checks are green.
+    conditions:
+      - -closed
+      - "#approved-reviews-by = 0"
+      - "#changes-requested-reviews-by = 0"
+      - review-requested != @kuglabs/core-team
+    actions:
+      request_reviews:
+        teams:
+          - "@kuglabs/core-team"