Returns all 8 folder names used for organizing match data.
Examples
get_all_data_folders()
#> [1] "long_form_male_international" "long_form_male_club"
#> [3] "long_form_female_international" "long_form_female_club"
#> [5] "short_form_male_international" "short_form_male_club"
#> [7] "short_form_female_international" "short_form_female_club"
# Returns: "long_form_male_international", "long_form_male_club", ...
