v5.0.0 Delete command

• Adds delete command which drops the database, deletes project files, and deletes the profile
• Adds a new option to InstallCommand to use an existing database
• Adds db parameter to InstallCommand to only install database
• Adds icon and repository link to NuGet package
• Fixes macro command not allowing old and new salt simultaneously
• Fixes repository link in HelpCommand

Breaking changes

• InstallOptions separated into 2 files: InstallProjectOptions and InstallDatabaseOptions. If you've edited xman.json to add default values, they will be migrated automatically when upgrading from v4.0.0
• IWizard.InitSteps and Run now accept parameters to determine what steps can be displayed