ci: add pull request triage and Kodiak merge workflow (#9109)

* chore: enable kodiak for auto merges

* ci: add pull request triage

* ci: update kentaro-m/auto-assign-action

This supports Node.js 16.

---------

Co-authored-by: iCrawl <buechler.noel@outlook.com>

.github/.kodiak.toml

@@ -0,0 +1,11 @@
+version = 1
+
+[merge]
+require_automerge_label = false
+blocking_labels = ['blocked']
+method = 'squash'
+
+[merge.message]
+title = 'pull_request_title'
+strip_html_comments = true
+include_coauthors = true

.github/auto_assign.yml

@@ -0,0 +1,8 @@
+addReviewers: true
+reviewers:
+  - iCrawl
+  - SpaceEEC
+  - kyranet
+  - vladfrangu
+numberOfReviewers: 0
+runOnDraft: true

.github/labeler.yml

@@ -0,0 +1,15 @@
+apps:guide:
+  - apps/guide/*
+  - apps/guide/**/*
+apps:website:
+  - apps/website/*
+  - apps/website/**/*
+packages:discord.js:
+  - scripts/*
+  - scripts/**/*
+  - src/*
+  - src/**/*
+  - test/*
+  - test/**/*
+  - typings/*
+  - typings/**/*

.github/workflows/pr-triage.yml

@@ -0,0 +1,17 @@
+name: 'PR Triage'
+on:
+  pull_request_target:
+jobs:
+  pr-triage:
+    name: PR Triage
+    runs-on: ubuntu-latest
+    steps:
+      - name: Automatically label PR
+        uses: actions/labeler@v4
+        with:
+          repo-token: '${{ secrets.GITHUB_TOKEN }}'
+          sync-labels: true
+
+      - name: Automatically assign reviewers
+        if: github.event.action == 'opened'
+        uses: kentaro-m/auto-assign-action@v1.2.4