Add jlinkOptions to JPackage tasks

To allow custom 'jlink' options to be specified.

Author: jjohannes

src/main/java/org/gradlex/javamodule/packaging/tasks/Jpackage.java

@@ -99,6 +99,9 @@ abstract public class Jpackage extends DefaultTask {
     @Input
     abstract public ListProperty<String> getJavaOptions();
 
+    @Input
+    abstract public ListProperty<String> getJlinkOptions();
+
     @Input
     abstract public ListProperty<String> getOptions();
 
@@ -172,6 +175,9 @@ public void runJpackage() throws Exception {
             for (String javaOption : getJavaOptions().get()) {
                 e.args("--java-options", javaOption);
             }
+            for (String javaOption : getJlinkOptions().get()) {
+                e.args("--jlink-options", javaOption);
+            }
         });
 
         File appImageFolder = requireNonNull(appImageParent.getAsFile().listFiles())[0];