Add Support for Kotlin Multiplatform

[pacu]

The issues below represent a checklist of what we consider missing for Kotlin multiplatform support.

When it says "Kotlin", we mean Kotlin Multiplatform.

• Create Bindings for Kotlin #73
• Create Build scripts for Kotlin and its tests #74
• Create a build script that creates an .aar that can be used on a Kotlin client #75
• Recreate the Swift tests in Kotlin #76
• Create a script that can build an artifact and release it through GitHub releases  #77 (this one is hard)
• Create a script to release an artifact through MavenCentral  #78