Added progress and notification to package manager
Added progress and notification to package manager

arduino-org/Arduino-OS,arduino-org/OS.js-v2,arduino-org/Arduino-OS,arduino-org/Arduino-OS,arduino-org/OS.js-v2,arduino-org/Arduino-OS,arduino-org/OS.js-v2,arduino-org/OS.js-v2,arduino-org/OS.js-v2,arduino-org/Arduino-OS