[Enhancement proposal]: android.permission.QUERY_ALL_PACKAGES

### Please check the following before submitting a new issue.

- [X] I have searched the [existing issues](https://github.com/baseflow/flutter-geocoding/issues).
- [X] I have carefully [read the documentation](https://github.com/baseflow/flutter-geocoding/blob/main/geocoding/README.md) and verified I have added the required platform specific configuration.

### Please select affected platform(s)

- [X] Android
- [ ] iOS

### Proposal

Google flagged my Flutter app for using "android.permission.QUERY_ALL_PACKAGES" permission.
I found out it is because of geocoding plugin.
Do you really need this permission?

### Pitch

Google flagged my Flutter app for using "android.permission.QUERY_ALL_PACKAGES" permission.
I found out it is because of geocoding plugin.
Do you really need this permission?

まず geocoding/README.md の Android 設定と、プラグインで使用されている Android 権限宣言を確認します。QUERY_ALL_PACKAGES が含まれている理由を検証し、サポートされる結果を文書化します。Google Play に対する権限要件が解決されるか、明確に説明されれば完了です。

索引モデルが issue の本文から書いたものです。