feat(manager/gradle): support for Kotlin extra properties, dependencySet collections and versionCatalog aliases

[Churro]

Changes

Adds support for several common Gradle patterns to declare dependencies.

• Kotlin extra properties, e.g.:

  val foo by extra("1.2.3")
  val foo by extra { "1.2.3" }
  val foo: String by extra { "1.2.3" }

• dependencySet collections (grouped into a single update using groupName), e.g.:

  dependencySet(group: 'org.apache.logging.log4j', version: '2.13.3') {
    entry 'log4j-api'
    entry 'log4j-core'
    entry 'log4j-slf4j-impl'
    entry 'log4j-jul'
  }

• Alias definitions used in Gradle version catalogs, e.g.:

  version("antlr", "4.10.1")
  alias("antlr").to("org.antlr", "antlr4").versionRef("antlr")
  alias("jackson").to ("com.fasterxml.jackson.core", "jackson-databind").version("2.13.0")

Context

• feat(manager/gradle): rewrite and extend parser #18484

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[renovate-release]

🎉 This PR is included in version 34.44.0 🎉

The release is available on:

• GitHub release
• 34.44.0

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