appending META-INF required for Spring Boot shading

[andrew-savvy]

Is there something shadowjar could be doing to simplify use w/Spring Boot? Currently something like this is required:

shadowJar {
  // Required for proper Spring Boot shading
  mergeServiceFiles()
  append("META-INF/spring.handlers")
  append("META-INF/spring.schemas")
  append("META-INF/spring.tooling")
  append("META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports")
  transform(PropertiesFileTransformer().apply {
    paths = listOf("META-INF/spring.factories")
    mergeStrategy = "append"
  })
}

spring-projects/spring-boot#1828
https://stackoverflow.com/q/74871072/10165346

[Goooler]

Duplicate of #1489