[K/N][build] Move Native plugin to build-tools

This is K/N only plugin that shouldn't be
in the buildSrc of the whole Kotlin project

kotlin-native/Interop/Indexer/build.gradle.kts

@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-import org.jetbrains.gradle.plugins.tools.lib
-import org.jetbrains.gradle.plugins.tools.solib
+import org.jetbrains.kotlin.tools.lib
+import org.jetbrains.kotlin.tools.solib
 import org.jetbrains.kotlin.*
 import org.jetbrains.kotlin.konan.target.*
 import org.jetbrains.kotlin.konan.target.ClangArgs
@@ -26,7 +26,7 @@ plugins {
     `kotlin`
     id("kotlin.native.build-tools-conventions")
     id("native-interop-plugin")
-    `native`
+    id("native")
 }