Rename to Develocity

[gabrielfeo]

It was announced that Gradle Enterprise would be renamed to Develocity. Starting with version 2024.1 that was just released, the product itself is using the new name, so this library should as well.

• Change pom, including repository URL
• Add relocation pom
• Change publish workflow to publish relocation pom
• Replace
  • gradle enterprise
  • gradle-enterprise
  • gradleEnterprise
  • GE
  • gradle_enterprise (env vars)
  • gradle.enterprise (package name)
• Rename artifact
• Change environment variables to DEVELOCITY_
• Fix bad replace: 'develocitytlin'
• Add library descriptor with new name and imports for Kotlin Jupyter
• Rename GitHub repository
• Publish javadoc of last gradle-enterprise version at the fallback GH pages repo, to keep old links working (done)