Plugin does not work on Linux aarch64

[hlinus]

Thanks for making this great plugin!

Unfortunately this plugin seems not to work on Linux aarch64 (Asahi Linux/Linux VMs on Apple silicon).

        at org.gradle.api.internal.project.taskfactory.TaskFactory$1.call(TaskFactory.java:95)
        at org.gradle.api.internal.project.taskfactory.TaskFactory$1.call(TaskFactory.java:82)
        at org.gradle.util.internal.GUtil.uncheckedCall(GUtil.java:454)
        at org.gradle.api.internal.AbstractTask.injectIntoNewInstance(AbstractTask.java:202)
        at org.gradle.api.internal.project.taskfactory.TaskFactory.create(TaskFactory.java:82)
        at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory.create(AnnotationProcessingTaskFactory.java:48)
        at org.gradle.api.internal.tasks.DefaultTaskContainer.createTask(DefaultTaskContainer.java:322)
        at org.gradle.api.internal.tasks.DefaultTaskContainer.access$200(DefaultTaskContainer.java:76)
        at org.gradle.api.internal.tasks.DefaultTaskContainer$2.call(DefaultTaskContainer.java:296)
        ... 209 more
Caused by: java.lang.IllegalStateException: Cannot determine operating system name and version
        at org.unbrokendome.gradle.pluginutils.SystemUtils.getOperatingSystemClassifier(SystemUtils.kt:27)
        at org.unbrokendome.gradle.plugins.helm.command.tasks.HelmDownloadClientPackage.<init>(HelmDownloadClientPackage.kt:63)
        at org.unbrokendome.gradle.plugins.helm.command.tasks.HelmDownloadClientPackage_Decorated.<init>(Unknown Source)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at org.gradle.internal.instantiation.generator.AsmBackedClassGenerator$InvokeConstructorStrategy.newInstance(AsmBackedClassGenerator.java:2070)
        at org.gradle.internal.instantiation.generator.AbstractClassGenerator$GeneratedClassImpl$GeneratedConstructorImpl.newInstance(AbstractClassGenerator.java:486)
        at org.gradle.internal.instantiation.generator.DependencyInjectingInstantiator.doCreate(DependencyInjectingInstantiator.java:64)
        at org.gradle.internal.instantiation.generator.DependencyInjectingInstantiator.newInstanceWithDisplayName(DependencyInjectingInstantiator.java:50)
        at org.gradle.api.internal.project.taskfactory.TaskFactory$1.call(TaskFactory.java:88)
        ... 217 more

Java properties settings:

os.arch = aarch64
os.name = Linux

Overriding the osClassifier has no effect (because the plugin tries to set a default value in the constructor?)

# gradle.properties
helm.client.download.osClassifier=linux-arm64

I think a simple solution is to add a aarch64 entry in https://github.com/unbroken-dome/gradle-plugin-utils/blob/master/gradle-plugin-utils/src/main/kotlin/org/unbrokendome/gradle/pluginutils/SystemUtils.kt#L19.