Support kotlin() dependency syntax

[alexvanyo]

The following shorthand syntax can be used to declare dependencies on libraries linked to the Kotlin version (as documented here)

build.gradle.kts:

implementation(kotlin("test"))

Right now, this leads to a parsing error in gradle-dependencies-sorter.

As a workaround, these dependencies can be specified directly like normal, using the Kotlin version directly:

libs.versions.toml:

kotlin-test = { group = "org.jetbrains.kotlin", name = "kotlin-test", version.ref = "kotlin" }

build.gradle.kts:

implementation(libs.kotlin.test)