Add Kotlin DSL (`build.gradle.kts`) example for enabling ObjectBox Admin in Flutter Android projects

[albinpk]

Is there an existing issue?

• I have searched existing issues

Use case

The current documentation for enabling ObjectBox Admin / ObjectBrowser in Flutter Android projects provides examples using Gradle Groovy DSL (build.gradle), which still works correctly.

However, recent versions of Flutter create Android projects using Gradle Kotlin DSL (build.gradle.kts) by default. Copying the documented Groovy snippet into a .kts file leads to Gradle script compilation errors due to DSL syntax differences.

Proposed solution

Including a Kotlin DSL example would improve the developer experience for new Flutter projects.

configurations {
    named("debugImplementation") {
        exclude(group = "io.objectbox", module = "objectbox-android")
    }
}

dependencies {
    debugImplementation("io.objectbox:objectbox-android-objectbrowser:<version>")
}

Additional context

Current Doc: https://docs.objectbox.io/data-browser#admin-for-android