Enhancement Request: Support for BOM Dependencies and Plugins Configuration in buildozer.spec

[kengoon]

Presently, there is no provision in the buildozer.spec file to include bom dependencies in the build.gradle file. For instance, if you wish to incorporate the Kotlin bom dependency, like so:

implementation platform("org.jetbrains.kotlin:kotlin-bom:1.8.22")

Similarly, when dealing with plugins such as the Google services Gradle plugin, you are required to specify the classpath within the buildscript block:

buildscript {

    repositories {
     ...
    }
    dependencies {
      ...

      // Google services Gradle plugin
      classpath 'com.google.gms:google-services:4.4.0'
    }
}

Subsequently, in the plugins section, you need to set the ID:

plugins {
    ...

    // Add the ID of the plugin
    id 'com.google.gms.google-services'
    ...
}

Regrettably, the current configuration of buildozer.spec lacks a dedicated section to define these dependencies and plugins directly. As a workaround, one must manually modify the file within the .buildozer directory.

### Tasks

[Julian-O]

Possibly related: https://github.com/orgs/kivy/discussions/8