feat: added progress bar for apt update

src/app/controllers/aptbuttonswidget.cpp

src/app/controllers/aptbuttonswidget.h

src/app/controllers/aptbuttonswidget.ui

src/app/controllers/aptcontroller.cpp

src/app/controllers/aptcontroller.h

src/app/datasource/datasourceinterface.h

src/app/datasource/dbusdatasource.cpp

src/app/datasource/dbusdatasource.h