* Rebuild gRPC protocol interfaces
* Implement methods to get user fields for board/port combination
* Implement dialog to input board user fields
* Add configure and upload step when uploading to board requiring user fields
* Disable Sketch > Configure and Upload menu if board doesn't support user fields
* Fix serial upload not working with all boards
* Update i18n source file
* fix user fields UI
* regenerate cli protocol
* fix localisation
* check if user fields are empty
Co-authored-by: Alberto Iannaccone <a.iannaccone@arduino.cc>