Follow up Android Support Bounties (3000USD)

[lihaoyi]

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From the maintainer Li Haoyi: I'm putting a 3000USD bounty on this issue, payable by bank transfer on a merged PR implementing this.

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This is a follow up issue to #3550, to further flesh out Android support in the Mill build tool. The goal is to cover a variety of use cases that are common in Android development, beyond simple hello-world applications

• Example of App Bundles (500USD)
• Example of Build Variants, with flavor/variant-specific sources (500USD)
• Example of mixed NDK/Java/Kotlin android app (500USD)
• Example of using Android Linting (500USD)
• Example using Instrumented tests on top of normal unit tests (500USD)
• Example using the Hilt dependency injection framework (500USD)