Feature: Upgrade to plugins DSL syntax of gradle

### Description

The project doesnot build with Flutter version 3.29.0 (channel stable) due to the error:
```You are applying Flutter's app_plugin_loader Gradle plugin imperatively using the apply script method, which is not possible anymore. Migrate to applying Gradle plugins with the declarative plugins block: https://flutter.dev/to/flutter-gradle-plugin-apply```

Upgrading the gradle syntax will make it support updated versions of flutter.

Already resolved this in [CCExtractor/taskwarrior-flutter](https://github.com/CCExtractor/taskwarrior-flutter/issues/452) repo.

### Screenshots