[kpm] Introduce GradleKpm* naming convention (2/2)

All Gradle specific kpm entities shall be disambiguated by using
the `GradleKpm` prefix. For example `MyEntity` shall now be called
`GradleKpmMyEntity` and a subclass would be called like
`GradleKpmSpecialMyEntity`

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/pm20/GradleKpmConfigurationCapabilitiesSetup.kt

@@ -8,6 +8,7 @@
 package org.jetbrains.kotlin.gradle.plugin.mpp.pm20
 
 import org.gradle.api.Project
+import org.gradle.api.artifacts.Configuration
 import org.gradle.api.artifacts.ConfigurationPublications
 import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.GradleKpmConfigurationCapabilitiesSetup.CapabilitiesContainer