feat(r/sedonafns): Add generated Sedona documentation as an R package

[paleolimbot]

Still in the works, but the idea is to have sd_xxx() functions that get translated to st_xxx function calls, where standard R tools know how to display the docs or query them.

library(sedonadb)
library(sedonafns)

sd_read_sf(system.file("shape/nc.shp", package = "sf")) |> 
  sd_transmute(
    NAME,
    area = sd_area(wkb_geometry)
  )
#> <sedonab_dataframe: NA x 2>
#> ┌─────────────┬─────────────────────┐
#> │     NAME    ┆         area        │
#> │     utf8    ┆       float64       │
#> ╞═════════════╪═════════════════════╡
#> │ Ashe        ┆ 0.11428350451751612 │
#> ├╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
#> │ Alleghany   ┆ 0.06139975567930378 │
#> ├╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
#> │ Surry       ┆  0.1430162843025755 │
#> ├╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
#> │ Currituck   ┆ 0.06977097556227818 │
#> ├╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
#> │ Northampton ┆ 0.15275930054485798 │
#> ├╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
#> │ Hertford    ┆ 0.09715755874640308 │
#> └─────────────┴─────────────────────┘
#> Preview of up to 6 row(s)

^{Created on 2026-05-16 with reprex v2.1.1}