Change filename of internationalization files from i18 to i18n.
I18n should stand for internationalization, not i18. That's why I changed in 'module-utils' name of the folder 'i18' and both .cpp and .hpp files to 'i18n'.
* SIM hot swap should now properly show |x| in sim place when there is
no SIM inserted in selected sim slot
* ServiceCellular now can inform on Fatal state desktop which will
trigger window `Reboot` with no point of exit
* All windows in Desktop now have name in one place
* Access to cmux channels via enum class instead of String (which is errorprone)