move to sourcehut

udpdate ci

update format

cargo wanted to add a line here

readme: update ci url

readme: update name

readme: update domain

cargo: update lockfile

add: problem 8

add: problem 9

problem 36: fix output

problem 35: fix lint

add: problem 36

fix: formatting

common: add binary representation

add: problem 35

problem 4 use palindrome check from common

common: add palindrome and fix cast in factorial

common: add palindrome

common: add factorial