Modernize repo

[ZacSweers]

This is a couple years' worth of upgrades but reviewing by commit should be ok! Most of the line diff is due to a formatter change.

• Gradle 8.2.1
• Migrate to Gradle version catalogs
  • Makes it easier to set up automated dependency management in the future, such as Renovate or Dependabot
• Upgrade dependencies. Relevant public-facing ones below
  • AndroidX Lifecycle 2.6.1
  • Kotlin 1.9.0
  • RxJava 3.1.6
  • RxAndroid 3.0.2
• Update lint to 8.0.0, also updates its jvm target to 17 (required)
• Update build to use jdk 17 (still targeting jvm target 8 for anywhere not lint)
• Clean up a bunch of boilerplate in the root build file now that we get better types with kotlin dsl
• Switch to KSP for autoservice handling
• AGP 8.0
• Update to ktfmt for formatting. Ktlint is hardly maintained and doesn't have consistent formatting
• Fix lint not capturing changed argument orders in withScope use
• Migrate to kotlin gradle DSL
• Finally run error prone on the sample
• Update error prone and fix any new issues
• Upgrade publishing to latest APIs + auto-closing/releasing
• Modernize Dokka rendering, prettify docs, modernize website publishing structure