Update function documentations

[Karim-Mane]

This PR contains the following changes:

• clean_data(): the function no longer takes params as an input. This has been replaced by other parameters that relates directly to the cleaning operations to be performed on the data. The list of arguments is documented in the function documentation. In the current implementation, a call of clean_data() will look like this:

cleaned_data <- clean_data(
  data = test_data,
  remove_constants = list(cutoff = 1),
  replace_missing_values = list(target_columns = NULL, na_strings = "-99"),
  remove_duplicates = list(target_columns = NULL),
  standardize_dates = list(
    target_columns = NULL,
    error_tolerance = 0.4,
    format = NULL,
    timeframe = as.Date(c("1973-05-29", "2023-05-29")),
    orders = list(
      world_named_months = c("Ybd", "dby"),
      world_digit_months = c("dmy", "Ymd"),
      US_formats = c("Omdy", "YOmd")
    ),
    modern_excel = TRUE
  ),
  standardize_subject_ids = list(
    target_columns = "study_id",
    prefix = "PS",
    suffix = "P2",
    range = c(1, 100),
    nchar = 7
  ),
  to_numeric = list(target_columns = "sex", lang = "en"),
  dictionary = NULL
)

• All vignettes have been updated to account for this change
• Many function documentations have been updated