ci: crazy-max/ghaction-github-labeler を導入

.github/labels.yml

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+# Default labels
+- name: "bug"
+  color: "d73a4a"
+  description: "Something isn't working"
+
+- name: "dependencies"
+  color: "1d76db"
+  description: "Pull requests that update a dependency file"
+
+- name: "DO NOT MERGE"
+  color: "b60205"
+
+- name: "documentation"
+  color: "0075ca"
+  description: "Improvements or additions to documentation"
+
+- name: "duplicate"
+  color: "cfd8d7"
+  description: "This issue or pull request already exists"
+
+- name: "enhancement"
+  color: "a22eef"
+  description: "New feature or request"
+
+- name: "good first issue"
+  color: "fe9b9c"
+  description: "Good for newcomers"
+
+- name: "help wanted"
+  color: "008672"
+  description: "Extra attention is needed"
+
+- name: "ignore for release"
+  color: "bfd4f2"
+  description: "Exclude from Release Notes"
+
+- name: "wontfix"
+  color: "ffffff"
+  description: "This will not be worked on"
+
+- name: "work in progress"
+  color: "e5d19e"
+
+# Type labels
+- name: "@type/ci"
+  color: "ededed"
+
+- name: "@type/docs"
+  color: "ededed"
+  from_name: "documentation"
+
+- name: "@type/feature"
+  color: "ededed"
+
+- name: "@type/fix"
+  color: "ededed"
+
+- name: "@type/improve"
+  color: "ededed"
+
+# Top Package labels
+- name: "@apps/backend"
+  color: "e261d6"
+  description: "Backend development"
+
+- name: "@apps/frontend"
+  color: "f89c0f"
+  description: "Frontend development"
+
+# Core Package labels
+- name: "@core/common"
+  color: "e99695"
+
+- name: "@core/data"
+  color: "50D413"
+
+- name: "@core/database"
+  color: "88651D"
+
+- name: "@core/datastore"
+  color: "1997D2"
+
+- name: "@core/designsystem"
+  color: "936116"
+
+- name: "@core/domain"
+  color: "DC79FD"
+
+- name: "@core/model"
+  color: "D1A70E"
+
+- name: "@core/network"
+  color: "630D81"
+
+- name: "@core/testing"
+  color: "29033D"
+
+# Feature Package labels
+- name: "@feature/top"
+  color: "c22752"
+
+- name: "@feature/auth"
+  color: "48360E"

.github/workflows/labels.yml

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+name: "Labels"
+
+on:
+  push:
+    branches:
+      - 'main'
+    paths:
+      - '.github/labels.yml'
+      - '.github/workflows/labels.yml'
+  pull_request:
+    paths:
+      - '.github/labels.yml'
+      - '.github/workflows/labels.yml'
+
+jobs:
+  labeler:
+    runs-on: ubuntu-22.04
+    steps:
+      # https://github.com/marketplace/actions/checkout
+      - name: Checkout
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
+      # https://github.com/marketplace/actions/github-labeler
+      - name: Run Labeler
+        uses: crazy-max/ghaction-github-labeler@de749cf181958193cb7debf1a9c5bb28922f3e1b # v5.0.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          yaml-file: .github/labels.yml
+          dry-run: ${{ github.event_name == 'pull_request' }}
+          exclude: |
+            help*
+            *issue