dfr shape for dataframe

Shows column and row size for a dataframe.

Signature

> dfr shape

Examples

Shows row and column shape

> [[a b]; [1 2] [3 4]] | dfr into-df | dfr shape
╭───┬──────┬─────────╮
│ # │ rows │ columns │
├───┼──────┼─────────┤
│ 0 │    2 │       2 │
╰───┴──────┴─────────╯