tests: add simple test for evolution on one_max

refactor: do perturbation in place instead of cloning

fix: tournament selection in case last wins returned wrong index

fix: tournament replacement strategy could be using wrong indices

feat: add best replacement

feat: add best selection

fix: return proper indices from tournament

feat: add mutation and combined perturbations

chore: make library out of eoa_lib

chore: move env to codes/eoa_lib