Add a recipe for converting Gradle scripts from Groovy DSL (`.gradle`) to Kotlin DSL (`.gradle.kts`)

[yogurtearl]

Add a recipe for converting Gradle scripts from Groovy DSL (.gradle) to Kotlin DSL (.gradle.kts)

related (possibly prerequisite):

• https://github.com/openrewrite/rewrite/issues/3291

[timtebeek]

This is likely to be a large effort, ideally in collaboration with the folks at Gradle.

[shanman190]

Another aspect to throw out here is that Gradle is already looking on to the next evolution of the buildscript definition. So Kotlin DSL as it stands today might only be a stepping stone to their longer term goals.

https://blog.gradle.org/declarative-gradle