added mock companies house api, company not found message to company add in account creation
added mock companies house api, company not found message to company add in account creation

tyfairclough/das-aml-beta-ui,tyfairclough/das-aml-beta-ui,tyfairclough/das-aml-beta-ui,tyfairclough/das-aml-beta-ui,tyfairclough/das-aml-beta-ui