The adds the default parameter to @Option and @Argument initializers when the value type is an array. Default values are overridden when passing explicit values on the command line. Default is still an empty array if default parameter is omitted and no explicit values are passed.

Closes #107

Checklist

• I've added at least one test that validates that my change is working, if appropriate
• I've followed the code style of the rest of the project
• I've read the Contribution Guidelines
• I've updated the documentation if necessary