I noticed that the `android_splash_screen` sample was outdated and was
not runnable due to gradle issues.
This commit fixes the Gradle setup for the `android_splash_screen`
sample.
Key changes include:
* Upgrading Gradle wrapper from version 6.7 to 8.7.
* Migrating to the plugins block in `settings.gradle` and
`app/build.gradle` for applying Android, Kotlin, and Flutter Gradle
plugins.
* Removing the outdated `buildscript` block from the root
`build.gradle`.
* Updating `compileSdkVersion` and `targetSdkVersion` to 34.
* Setting `minSdkVersion` to `flutter.minSdkVersion`.
* Adding the `namespace` property as required by newer Android Gradle
Plugin versions.
* Refactoring Kotlin constant declarations in `MainActivity.kt`.
@ericwindmill
## Pre-launch Checklist
- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I have added sample code updates to the [changelog].
- [x] I updated/added relevant documentation (doc comments with `///`).
Co-authored-by: Eric Windmill <eric@ericwindmill.com>
Adds a Flutter app designed for devices running at least Android 12 that exemplifies how to implement an animated splash screen with the SplashScreen API.
