Update icon for "New -> Kotlin Activity" Action

Assets were taken from DSGN-2829

idea/idea-analysis/src/org/jetbrains/kotlin/idea/KotlinIcons.java

@@ -30,6 +30,7 @@ public interface KotlinIcons {
     Icon CLASS = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/classKotlin.png");
     Icon ENUM = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/enumKotlin.png");
     Icon FILE = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/kotlin_file.png");
+    Icon ACTIVITY = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/kotlin_activity.png");
     Icon OBJECT = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/objectKotlin.png");
     Icon TRAIT = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/interfaceKotlin.png");
     Icon FUNCTION = IconLoader.getIcon("/org/jetbrains/kotlin/idea/icons/function.png");

idea/idea-android/src/org/jetbrains/kotlin/android/actions/NewKotlinActivityAction.kt

@@ -40,7 +40,7 @@ import kotlin.reflect.memberFunctions
 private val NEW_KOTLIN_ACTIVITY_START_LABEL = "Start New Kotlin Activity Action"
 private val NEW_KOTLIN_ACTIVITY_END_LABEL = "Finish New Kotlin Activity Action"
 
-class NewKotlinActivityAction: AnAction(KotlinIcons.FILE) {
+class NewKotlinActivityAction: AnAction(KotlinIcons.ACTIVITY) {
 
     companion object {
         internal fun attachGradleSyncListener(project: Project) {