Optimize Kotlin reflection runtime efficiency

[spring-projects-issues]

kotlin-reflect is a big 2 MB JAR, producing important CPU and memory spikes at startup on the JVM.

It would be interesting to explore if it could be replaced by a lighter incarnation like https://github.com/Kotlin/kotlinx.reflect.lite or use kotlinx-metadata-jvm at build time to generate some kind of reflection index. jackson-module-kotlin should also work with similar approach (not blocking now that we have Kotlin Serialization support).

[sdeleuze]

Short term kotlin-reflect usage could be optimized, especially for native use case, by KT-44594 so feel free to vote for it on Kotlin issue tracker.