Fix gradle deprecations in Kotlin Native

Merge-request: KT-MR-10267
Merged-by: Cristian Garcia <Cristian.Garcia-Marin@jetbrains.com>

kotlin-native/backend.native/build.gradle

@@ -225,7 +225,7 @@ task external_jars(type: Copy) {
 
 task debugCompiler(type: JavaExec) {
     dependsOn ':dist'
-    main = 'org.jetbrains.kotlin.cli.bc.K2NativeKt'
+    mainClass = 'org.jetbrains.kotlin.cli.bc.K2NativeKt'
     classpath = project.fileTree("${distDir.canonicalPath}/konan/lib/") {
         include '*.jar'
     }

kotlin-native/build-tools/src/main/groovy/org/jetbrains/kotlin/NativeInteropPlugin.groovy

@@ -198,7 +198,7 @@ class NamedNativeInteropConfig implements Named {
             dependsOn ":kotlin-native:Interop:Indexer:nativelibs"
             dependsOn ":kotlin-native:Interop:Runtime:nativelibs"
             classpath = project.configurations.interopStubGenerator
-            main = "org.jetbrains.kotlin.native.interop.gen.jvm.MainKt"
+            mainClass = "org.jetbrains.kotlin.native.interop.gen.jvm.MainKt"
             jvmArgs '-ea'
 
             systemProperties "java.library.path" : project.files(

kotlin-native/common/build.gradle.kts

@@ -28,12 +28,10 @@ bitcode {
 
 val hostName: String by project
 
-val build by tasks.registering {
+tasks.register("build") {
     dependsOn("${hostName}Common")
 }
 
-val clean by tasks.registering {
-    doFirst {
-        delete(buildDir)
-    }
+tasks.register<Delete>("clean") {
+    delete(buildDir)
 }