大幅変更＆環境バージョンアップ

plugin/qr_code_scanner/.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG] "
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Flutter information**
+Always provide the output of `flutter doctor -v` as it is needed in order to know on which Flutter versions the bug exists in.
+
+**Device (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.

plugin/qr_code_scanner/.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[FEATURE] "
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

plugin/qr_code_scanner/.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    reviewers:
+      - "juliansteenbakker"
+  - package-ecosystem: gradle
+    directory: "/android"
+    schedule:
+      interval: "weekly"
+    reviewers:
+      - "juliansteenbakker"
+  - package-ecosystem: gradle
+    directory: "/example/android"
+    schedule:
+      interval: "weekly"
+    reviewers:
+      - "juliansteenbakker"

plugin/qr_code_scanner/.github/workflows/dart.yml

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+name: dart
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: '11'
+      - uses: subosito/flutter-action@v2.10.0
+      - name: Version
+        run: flutter doctor -v
+      - name: Install dependencies
+        run: flutter pub get
+      - name: Format
+        run: dart format --set-exit-if-changed .
+      - name: Linter
+        run: flutter analyze