More generally members now has a proper looking insert new member function
Added new combinational permision for basic users
Reworked DATBASE_URL initialization for the API's environment variable
Nearly there to conditionally running the server, only need to add one more guard
Base member creation being added in this commit notes to follow
struct Member has had its field types changed to db_types::* types
Member::to_json was added to support simple json serialization into responses
struct InsertableMember added because `id` is generated by SQL for us
- this means we have to do two queries 1 to insert and 2 to fetch
- mysql_async does not provide an inlined way of fetching a recently added row
func general_new_user is only checking for a `name`parameter
- falls back to a basic default name for those that don't set a name on jooin
- handles its own sub errors so the main dispatcher doesn't care about after move
