Add new variables to Birmingham germline importer#180

NImeson merged 9 commits intodevelopNHSDigital/data_management_system:developfrom

feature/ndrs2-3690/add_new_birmimgham_crc_variablesNHSDigital/data_management_system:feature/ndrs2-3690/add_new_birmimgham_crc_variablesCopy head branch name to clipboard