Confusion with two artifacts for android and non-android

[ZacSweers]

I was recently working on integrating dokka into an android library, and despite being able to apply the plugin with no issues, sources/javadoc jars were strangely not getting generated. Finally after updating to 0.9.18, I suddenly would get a crash looking up a configuration that didn't exist. When tracing down this code, I noticed that it was emanating from the non-android plugin. This made me realize that the artifact used in my project was wrong, and finally resolved my jar generation after switching.

Is there a need for two artifacts? Especially when seemingly applying either plugin can be applied from the wrong artifact. https://github.com/square/sqldelight did something similar in the beginning and unified their plugin after the confusion it caused, and I'd be interested to know if there's a technical reason dokka has to have them separate.

[kamildoleglo]

Done in 1c4a3c6