Introduce a new ModuleService for common module management operations

I just implemented PowerShell Gallery module update logic for the PowerShell ISE Preview and realized that this behavior really should be made available to all editors which use Editor Services. I'd like to take the work @dfinke did for PowerShell Gallery module installation and put it together with my module update checking logic to make a new ModuleService which has the following features:

• List and install modules from the PowerShell Gallery (and any other registered repository)
• Check for, get notified about, and install modules that have new updates
• Publish a module to the PowerShell Gallery (generally used for publishing a module from the current workspace path)

Comience revisando el trabajo de @dfinke sobre la instalación de módulos en PowerShell Gallery y la lógica de actualización del módulo PowerShell ISE Preview a la que se hace referencia en el issue. Compare esos comportamientos existentes con el ModuleService compartido propuesto. El trabajo estará terminado cuando el servicio admita listar, instalar, comprobar y notificar actualizaciones, actualizar y publicar módulos a través de repositorios registrados.