Added true resume support, DELETE/cancel, progress callbacks and uppe…

[Yyeger]

…d elixir version support.

• Add TusClient.resume/3 for true resumable uploads via HEAD
• Add TusClient.cancel/2 for DELETE/termination protocol
• Add on_progress, on_complete, on_error callbacks
• Add file size pre-check against server max_size
• Update deps for Elixir 1.17.3 (httpoison 2.0, bypass 2.1, etc.)
• Fix Logger.warn -> Logger.warning deprecation
• Fix use Plug.Test -> import Plug.Conn deprecation
• Fix Enum.map |> Enum.join -> Enum.map_join (credo)