add options input to proj_trans_create

[mdsumner]

See here, https://proj.org/en/9.4/development/reference/functions.html#c.proj_create_crs_to_crs_from_pj

what we want is "FORCE_OVER", because

 tt <- proj_trans_create("EPSG:3857", "EPSG:4326")
xmin <- -20037508.3427892

wk::wk_transform(wk::xy(xmin, 0), tt)
#<wk_xy[1]>
#[1] (-180 0)
wk::wk_transform(wk::xy(xmin-0.001, 0), tt)
#<wk_xy[1]>
#[1] (180 0)

with FORCE_OVER we could be like pyproj here

https://gist.github.com/mdsumner/b576d0d3c3cd8480235d5a9aac6d7afe

[anthonynorth]

Should be simple enough to do. Do we want options to be top level parameters to proj_trans_create() and proj_trans(), or would it be better to use an options object & constructor?

ONLY_BEST requires >= 9.2. How should we handle that? Forcibly remove it when proj_version() < 9.2 (with warning?), or let libproj error?

[mdsumner]

I think I'm happy with an options arg that passes in args like the command line, I've become used to that for GDAL

But, good questions I haven't thought it through