load_genbed: Load a data file in GENBED format
In haizi-zh/bioessentials: Home-made essential tools for bioinformatics project

This function loads a genbed file, which is simply a BED-like tsv file, with a header line (optional) containing column names, and the types of the first three columns are guaranteed to be "cii"

load_genbed(
  file_path,
  region = NULL,
  col_names = NULL,
  na = c("", "NA"),
  col_types = NULL,
  is_bedgraph = FALSE,
  ...
)

`file_path`	Path or URL to the data file. Can be a local path, file://, http://, https://, ftp:// and sftp://
`col_names`	can be NULL (infer from file), or a character vector (user-provided column names). In the infer-from-file scenario, if there is a column header, we will have the column names. However, if the column header is missing, then we will have the following column names: chrom, start, end, X4, X5, ...
`na`	Character vector of strings to interpret as missing values.
`col_types`	A character string represents column names. Refer to `col_type` in readr. If NULL, then the types for the first three columns are character, integer, integer, and the rest are guessed from the data.
`is_bedgraph`	A logic value indicating whether the input is BED or BEDGRAPH. The difference between these two is that, the 4th column is character for BED, and numeric for BEDGRAPH