feat: AirPods Max (2nd Gen) を対応デバイスに追加する

[ai-kurou]

Summary

• モデルコード 0x2D20（モデル番号 A3454）を追加
• シングルバッテリーモデルとして登録
• 画像リソース (airpods_max_2nd_gen.png) を追加

Test plan

• AirPods Max (2nd Gen) 接続時にデバイス名が正しく表示されること
• バッテリー表示がシングル（本体のみ）で表示されること

Summary by CodeRabbit

リリースノート

• 新機能
  • Apple AirPods Max（第2世代）に対応しました。

[coderabbitai]

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	PRタイトルはAirPods Max (2nd Gen)の対応デバイス追加という主要な変更を明確に要約しており、変更内容と完全に関連している。
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/add-airpods-max-2nd-gen

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 0 complexity · 0 duplication

Metric	Results
Complexity	0
Duplication	0

View in Codacy

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!