Shared column schema: espn mbb season weeks schema

Columns shared verbatim across: espn_mbb_season_weeks, espn_nba_season_weeks.

Details

col_name	types	description
league	character	League slug.
season	integer	Season year.
season_type	integer	Season-type id.
week	integer	Week number (1-based).
ref	character	$ref URL for the week detail.