feat: added fee payer#6

Open

ratik wants to merge 4 commits intoneutron_audit_informal_17_01_2023from

feat/NTRN-331-sudo-fees-payer

Commits on Jan 23, 2023

feat: added fee payer
ratik
committed

Commits on Jan 24, 2023

fix: return error on invalid payer address
ratik
committed

Commits on Jan 25, 2023