Split team.yml file by department and division

The request is to split the team.yml file by department and division due to a high number of merge conflicts on this one file. Once all the files are split, the idea is to have all the files in one folder to be able to use middlemanapp.

Please view recording/agenda in this link: https://docs.google.com/document/d/181g484T18MM5QgIlyi1Akc0HlYWOljTxKQ1Q7dTXmjc/edit?usp=sharing