Update read_camtrapdp() docs: don't read all resources

[PietrH]

          Alrighty! I would suggest making note of this behaviour (we don't read everything, only default tables) in the documentation of `read_camtrapdp()`

Originally posted by @PietrH in #90 (comment)

[PietrH]

@peterdesmet So, If I understand you correctly a user is supposed to get custom/extra resources out of a Camera Trap Data Package via x$data, but via frictionless::read_resource()

Like this:

frictionless::read_resource(camtrapdp::example_dataset(), "individuals")
#> Error in `get_schema()`:
#> ! Resource "individuals" must have a profile property with value
#>   "tabular-data-resource".

^{Created on 2024-07-04 with reprex v2.1.0}

It seems like this currently doesn't work, because frictionless::read_resource() only supports tabular data. Do you have any plans on supporting non tabular data in frictionless::read_resource()?

[PietrH]

I think it's important to get a better idea of how we'd recommend getting these custom resources out, before we write the docs on them.

[PietrH]

Note to self: snippet on how to read non tabular resources

#90 (comment)