openplantpathology/hagis: hagis 3.1.11

Minor changes

• Put more guardrails in place for CRAN. Ensure that all tests are skipped on CRAN using a universal statement rather than skip_on_cran().

• Use data.table::setDTthreads(1L) at the top of both vignettes.

• Use @examplesIf interactive() for all examples so that they don't run on CRAN.

• Removes a redundant zzz.R file that had globals in it. This revealed that one of the autoplot functions was missing the @autoglobal tag, which has been added.