Added comments to exported variables and functions, fix typos in comments and extra newlines in code Signed-off-by: Angira Kekteeva <kira@nspcc.ru>
Took from commit on neofs-node: f81ecbe8db17e63674a47b4b6d49575aced3c16d Signed-off-by: Angira Kekteeva <kira@nspcc.ru>