Added a virtual Initialize method to ApplicationCLICommand, allowing derived classes to customize initialization.
Added new JobDescription property to StartApplicationCommand, supporting customization of the description displayed in the console when the application runs.
Added new property JobCompletionDescription to StartApplicationCommand, allowing the message displayed when the command completes successfully to be customized.
Added new property ApplicationStartingDescription to StartApplicationCommand, allowing the message displayed when the application is starting to be customized.