Provide `dev-env` configuration that could be supported by `neofs-adm`

[carpawell]

neofs-adm could be used in dev-env (without init steps and so on) but currently every developer should change (rename, move, create additional dirs) repo to be able to use it for testing.

Provide config that satisfies neofs-adm requirements and document it (describe what it is for, how to use, etc).