feat: updated template of all plugins and example app to Flutter 3.29 standard

[OutdatedGuy]

Changes

• Increase android sdk compile version to 35
• Updates Java compatibility version to 11

---

1. Overwrote all plugins with flutter create --overwrite ..... to get latest flutter template
2. Using latest kotlin style in buid.gradle
3. Removed the old .gradle files in favor for .gradle.kts in example app
4. Updated ios constraints from 15.5.0 to 15.5 as apple does (wouldn't change / break anything)

fixes #758, fixes #759

[fbernaly]

@OutdatedGuy: could you resolve conflicts, also, update all dependencies to google_mlkit_commons: ^0.10.0, like this:

https://github.com/flutter-ml/google_ml_kit_flutter/blob/develop/packages/google_mlkit_text_recognition/pubspec.yaml#L14C3-L14C32

[OutdatedGuy]

update all dependencies to google_mlkit_commons: ^0.10.0

@fbernaly Should I update them to 0.10.0 or 0.11.0? As this PR will increment google_mlkit_commons version to 0.11.0

[fbernaly]

to 0.10.0 because that is the version we have published. Once I publish 0.11.0 we will change the version

[fbernaly]

why in some pubspec.yaml file you added double quotes? and in other single quotes?
I would like to keep all of them unquoted.

https://stackoverflow.com/a/69850618/3610617

[OutdatedGuy]

The flutter create command added those only around description. Seems like some flutter standard or something.

[fbernaly]

@OutdatedGuy : changes have been merged and released

[fbernaly]

Thanks for your contributions

[fbernaly]

https://github.com/flutter-ml/google_ml_kit_flutter/blob/develop/CHANGELOG.md#2025-03-20