grimblast: add timeout flag

[Azazel-Woodwind]

Description of changes

Add a flag to configure notification timeout

Things done

• For new programs

  • Add the program to the README table, with yourself as the maintainer
  • Add a README for the program itself
  • Add Makefile (and Nix derivation optionally, otherwise @fufexan will do it)
  • If the program is a script, add it to the CI checks matrix

• For changes

  • Add changes to the CHANGELOG
  • Reflect your changes in the man pages (if they exist)

[fufexan]

Why delay the notification though?

[Azazel-Woodwind]

Why delay the notification though?

It's not a delay per say, but ultimately acts as an action timeout. If you imagine implementing the frontend for a notification daemon, the user would currently only have 3s to activate the notification action. That's a little small imo, so why not make it configurable

[fufexan]

Oh okay, that makes sense. Though the -t short option will conflict with the one for --filetype in the upcoming #169. Maybe a different letter can be used instead.

[Azazel-Woodwind]

Maybe a different letter can be used instead.

Sure, I changed it to -e, --expire-time which is more in line with the actual flag name for notify-send

[fufexan]

Great. This should also be reflected in the manpage, and the changelog updated.

[fufexan]

LGTM, thanks!