Add gradle task to build platform specific distro

This adds the gradle task ':assemblePlatformArchive' that depends on the
platform specific distro archive tasks and allows using the same task for
building only the archive according to the local platform.

This delegates to

   :distribution:archives:windows-zip:assemble on windows
   :distribution:archives:linux-tar:assemble on linux
   :distribution:archives:darwin-tar:assemble on osx

Closes #53682

Author: breskeby

build.gradle

@@ -27,6 +27,7 @@ import org.elasticsearch.gradle.Version
 import org.elasticsearch.gradle.VersionProperties
 import org.elasticsearch.gradle.info.BuildParams
 import org.elasticsearch.gradle.plugin.PluginBuildPlugin
+import org.elasticsearch.gradle.OS
 import org.gradle.plugins.ide.eclipse.model.AccessRule
 import org.gradle.plugins.ide.eclipse.model.SourceFolder
 import org.gradle.util.DistributionLocator
@@ -507,6 +508,14 @@ allprojects {
   }
 }
 
+tasks.register('assemblePlatformArchive') {
+  def osDependetProjectName = OS.conditionalString().onWindows({"windows-zip"})
+                                                    .onLinux({"linux-tar"})
+                                                    .onMac({"darwin-tar"})
+                                                    .supply()
+  dependsOn ":distribution:archives:${osDependetProjectName}:assemble"
+}
+
 // TODO: remove this once 7.7 is released and the 7.x branch is 7.8
 subprojects {
   pluginManager.withPlugin('elasticsearch.testclusters') {