DataColumnSize
Relative size of a column determines the share of total table width allocated to each individual column.
When determining column widths, ratios between S, M and L
columns are kept (i.e. Large columns are set to 1.2x width of Medium ones).
See flet_datatable2.DataTable2.sm_ratio, flet_datatable2.DataTable2.lm_ratio.
Inherits: enum.Enum