RCC files not read properly for NanoString PlexSet data

[mcanouil]

When reading Plexset RCC files which include 8 samples named Endogenous*s with * from 1 to 8.
The Code_Summary column is not unnested properly, i.e., a two-level list-column instead of a simple list-column.

library(NACHO)
.data <- summarise(
  data_directory = paste(params[["data_directory"]], "RCC", sep = "/"),
  ssheet_csv = paste(output_directory, "sample_sheet.csv", sep =  "/"),
  id_colname = "IDFILE",
  housekeeping_genes = NULL,
  housekeeping_predict = FALSE,
  housekeeping_norm = TRUE,
  normalisation_method = "GLM",
  n_comp = 10
)
# > Error in `[[<-.data.frame`(`*tmp*`, "CodeClass", value = character(0)) : replacement has 0 rows, data has 5760

This issue might araise other issues later for normalisation and visualisation.