Add missing implementation dependencies to androidx-plugin/gradle-plugin
Add missing implementation dependencies to androidx-plugin/gradle-plugin

Used in playground builds to allow them to apply the AndroidX plugins
since they are typically built from buildSrc, but playground has a
different root.

Test: cd activity ./gradlew :androidx-plugin:gradle-plugin:compileKotlin
Change-Id: I61ed937430c8e03e3a6116188414b7baa93a978e

AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx