tidyterra 1.2.0

This release adds tidyverse-style methods for SpatVector objects and includes
documentation reviewed with explicit AI-assisted editing.

• Package documentation was reviewed and updated with AI assistance, including
  roxygen2 comments, generated Rd files, documentation chunks, prose
  documentation and user-facing cli messages.

New methods

The following methods were generated with AI assistance.

• complete.SpatVector() supports tidyr::complete().
• cross_join.SpatVector() matches each SpatVector feature in x with every
  row in y.
• expand.SpatVector() returns attribute combinations for SpatVector objects.
• group_map.SpatVector() and group_modify.SpatVector() apply functions to
  grouped SpatVector objects.
• group_nest.SpatVector() and nest_by.SpatVector() create tibbles with
  SpatVector list-columns.
• group_split.SpatVector() splits grouped SpatVector objects into a list of
  SpatVector objects.
• group_trim.SpatVector() drops unused factor levels in grouping variables.
• nest.SpatVector() creates nested SpatVector list-columns.
• nest_join.SpatVector() creates nested joins for SpatVector inputs.
• reframe.SpatVector() can return any number of rows per SpatVector group.
• rows_insert.SpatVector() and related rows_*() methods update SpatVector
  rows while preserving geometries.
• uncount.SpatVector() duplicates SpatVector features according to a
  weighting variable.
• ?unite.Spat combines several SpatRaster layers or SpatVector attributes.

What's Changed

• Add new methods by @dieghernan in #204
• Add more tidyverse SpatVector methods by @dieghernan in #205
• Refactor with Codex by @dieghernan in #206
• Bump codecov/codecov-action from 6 to 7 by @dependabot[bot] in #207
• Fix with jarl by @dieghernan in #208

Full Changelog: v1.1.0...v1.2.0