Switch PortProton icon and added arch multilib section to README

Brought fps limitation to the same form as CPU cores limitation

Changed yad scale to yad combobox with values 30,60,90 and 120 fps also changed disable from 0 to disabled

Update Readme (fix icon)

- Added Battle Of Space Raiders autoinstall
- Replaced the url for the Caliber download
- Deleted try_download_caliber function
- Replaced wget -O in PW_ANKAMA to try_download function

Added Battle Of Space Raiders autoinstall
Replaced the url for the Caliber download
Deleted try_download_caliber function
Replaced wget -O in PW_ANKAMA to try_download function

feat: Add ability to set shortcut name

Minor improvements

Replaced which with command -v since which is already deprecated
Replaced lsb_release -d with cat /etc/os-release since this method is more universal
Fixed a couple of typos in the PortProton installation script

added a check for the existence of a symbolic link

If a person runs a PortProton installation when it is already installed e.g. if he installed PortProton manually and decided to switch to the package, the first installation will break because of the existence of a symbolic link and consequently PortPrototon will not run

Update script lang - №2

Заменил упоминание PortProton на переменную $portname
Привёл английскую локализацию к тому же виду что и русскую
Дополнил общую локализацию