Add Kotlin @Metadata Parser

[Amejonah1200]

It would be a good thing to be able to read what's in the metadata, as it would allow reverse engineering kotlin apps. (Also some Jetbrains IntelliJ Plugins).

[Col-E]

Would be very cool to implement a ClassVisitor that remaps the metadata annotation to a custom one that shows the data in plain text. That way we can simply insert that visitor into the decompiler interception logic to support this for any decompiler.

[Amejonah1200]

We could use this as a base for the deserialization: https://github.com/JetBrains/kotlin/tree/1.8.0/core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization
https://github.com/Guardsquare/proguard-core/tree/master/base/src/main/java/proguard/classfile/kotlin

[Col-E]

Can begin working on this now with: 14976b2