Add local Mollie payment stub for development and testing#46

MannyLama wants to merge 1 commit intomainScouts-Gidsen-Lebbeke/site-backend:mainfrom

claude/mollie-stub-local-testing-011CUoZYMJbbJihckatz9eMgScouts-Gidsen-Lebbeke/site-backend:claude/mollie-stub-local-testing-011CUoZYMJbbJihckatz9eMgCopy head branch name to clipboard