Keyboard input support for webplayer

[ikks]

Screencast from 2024-10-09 19-59-16.webm
This Pull Request adds support for keyboard presses. Related to https://github.com/orgs/asciinema/discussions/154

• Includes a new option to not show the key presses
• Tries to be unintrusive
• can be toggled
• I will open a PR for the documentation to add the new option for the player.
  Is pleasant to read your code. Cheers.

[ikks]

Doc is here asciinema/asciinema.github.io#11

[azat]

It would be very useful to have an ability to configure how much last keys should be shown, in number of keys or/and time (i.e. show pressed keys for the last 3 seconds). That way you can show sequence of keys, i.e. shortcuts, which can be important.

And maybe it worth to make the timeout (how long should the keys be shown) configurable, or maybe it is synced with the screencast, i.e. it will be automatically replaced with a new key stroke, and until then, it will be visible. In this case I guess first two things will be enough.

What do you think?

[ikks]

@azat I understand that for emacs users and other more complex scenarios it would be needed more keypressed for the explanations. I will skip this request.

There is now a fade effect that can be tested at https://igor.tamarapatino.org/samples/asciinema/ .