Build both variants for JS platform: IR klib and js+meta jar

Author: ilya-g

gradle.properties

@@ -6,6 +6,7 @@ versionSuffix=SNAPSHOT
 
 kotlin.mpp.enableGranularSourceSetsMetadata=true
 kotlin.mpp.enableCompatibilityMetadataVariant=true
+kotlin.js.compiler=both
 
 # Workaround for Bintray treating .sha512 files as artifacts
 # https://github.com/gradle/gradle/issues/11412