v0.1.0: total only flag (`-t`)

v.0.1.0: adds a new flag to only show the total of the counted file(s) (-t, --totalOnly)

$ bun x readlen -t **/*.md

totals:
  files: 9
  words: 692
  characters: 5,800
  paragraphs: 51
  total read time: 9 minutes

Full Changelog: v0.0.2...v0.1.0