Usage examples (after you load this file):
  tg "Hello from anywhere"                  # text to default channel
  tg -Text "<b>Bold</b>" -Html              # HTML text
  tg -Text "*Bold*" -Md -NoPreview          # Markdown, no link preview
  tgPhoto -Path "cover.jpg" -Caption "New"  # photo with caption
  tgVideo -Path "clip.mp4" -Caption "Ep.1" -Pin
  tgFile  -Path "report.pdf" -Caption "Q3" -Reply 1234
#>