make fastfetch output centered

[ingenarel]

fastfetch --logo-padding-left $(( ( $(tput cols) - 93) / 2 ))

tput cols gets the terminal width in chars
93 should be your fastfetch width, in my case, the width of this line was 93 chars:
Disk (/mnt/G): 208.61 GiB / 210.81 GiB (99%) - fuseblk

and dividing it by 2 gets us the ammount needed for the padding!

i'm pretty sure that there's a way to find out the max width of a fetch logo, but i couldn't figure out a way. yet...