[MPP] Support for platform notation in Gradle MPP dependencies configuration

KT-53396

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/HasKotlinDependencies.kt

@@ -62,6 +62,12 @@ interface KotlinDependencyHandler {
     fun enforcedPlatform(notation: Any, configureAction: Action<in Dependency>): Dependency =
         project.dependencies.enforcedPlatform(notation, configureAction)
 
+    fun platform(notation: Any): Dependency =
+        project.dependencies.platform(notation)
+
+    fun platform(notation: Any, configureAction: Action<in Dependency>): Dependency =
+        project.dependencies.platform(notation, configureAction)
+
     @Deprecated("Declaring NPM dependency without version is forbidden")
     fun npm(name: String): Dependency