duckplyr: A 'DuckDB'-Backed Version of 'dplyr'

#' Verbs not implemented in duckplyr
#'
#' The following dplyr generics have no counterpart method in duckplyr.
#' If you want to help add a new verb,
#' please refer to our contributing guide <https://duckplyr.tidyverse.org/CONTRIBUTING.html#support-new-verbs>
#' @rdname unsupported
#' @name unsupported
#' @section Unsupported verbs:
#' For these verbs, duckplyr will fall back to dplyr.
#' - [add_count()]
#' - [cross_join()]
#' - [do()]
#' - [group_by()]
#' - [group_indices()]
#' - [group_keys()]
#' - [group_map()]
#' - [group_modify()]
#' - [group_nest()]
#' - [group_size()]
#' - [group_split()]
#' - [group_trim()]
#' - [groups()]
#' - [n_groups()]
#' - [nest_by()]
#' - [nest_join()]
#' - [reframe()]
#' - [rename_with()]
#' - [rows_append()]
#' - [rows_delete()]
#' - [rows_insert()]
#' - [rows_patch()]
#' - [rows_update()]
#' - [rows_upsert()]
#' - [rowwise()]
#' - [setequal()]
#' - [slice_head()]
#' - [slice_sample()]
#' - [slice_tail()]
#' - [slice()]
#' - [ungroup()]
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