Look up the rule-book parameters that the geom_*() functions use to
draw a playing surface, so other packages can read them without reaching
into sportyR's internal data
Value
For a league, a named list of that league's parameters (lengths are
in the units given by its *_units entry). With league = NULL,
a named list of those lists, one per league
Examples
get_surface_dimensions("lacrosse", "NLL")$field_length
#> [1] 200
names(get_surface_dimensions("hockey"))
#> [1] "custom" "ahl" "echl" "iihf" "phf" "pwhl" "ncaa" "nhl"
#> [9] "ohl" "qmjhl" "nwhl" "ushl"
