add dictionary as an exported data frame

[avallecam]

hi @Karim-Mane doing a final review of the package, thought about if there is any rationale to not have the test dictionary as an exported object in the package?

library(magrittr)

# packages can export data sets
cfr::ebola1976 %>% tibble::as_tibble()
#> # A tibble: 73 × 3
#>    date       cases deaths
#>    <date>     <int>  <int>
#>  1 1976-08-25     1      0
#>  2 1976-08-26     0      0
#>  3 1976-08-27     0      0
#>  4 1976-08-28     0      0
#>  5 1976-08-29     0      0
#>  6 1976-08-30     0      0
#>  7 1976-08-31     0      0
#>  8 1976-09-01     1      0
#>  9 1976-09-02     1      0
#> 10 1976-09-03     1      0
#> # ℹ 63 more rows

# why not do the same for the sample dictionary in {cleanepi}
dictionary <- readRDS(
  system.file("extdata", "test_dict.RDS", package = "cleanepi")
)

dictionary
#>   options values    grp orders
#> 1       1   male gender      1
#> 2       2 female gender      2
#> 3       M   male gender      3
#> 4       F female gender      4
#> 5       m   male gender      5
#> 6       f female gender      6

^{Created on 2025-10-16 with reprex v2.1.1}