Add a way to have variable typing speed

[wizardlink]

Is your feature request related to a problem? Please describe.
I'd like a way of having variable typing speed, a range for the interval between keystrokes, to attempt to make it feel more human.

Describe the solution you'd like
I want to be able to set a variable, i.e. TypingSpeedVaried [250ms, 350ms] and have the Type actions pick a number in that range when waiting before the next input.

Describe alternatives you've considered
You can Sleep before every keystroke, but that is a very tedious process.

Thank you for the amazing tool you've given us by the way!

[J-C-B]

Hi, if you scroll to the bottom of the readme.....

https://github.com/charmbracelet/vhs?tab=readme-ov-file#set-typing-speed

Type something really slowly!
`Type@500ms "Slow down there, partner."`

Also....

Set Typing Speed

Set TypingSpeed 500ms # 500ms
Set TypingSpeed 1s    # 1s

https://github.com/charmbracelet/vhs?tab=readme-ov-file#type

[wizardlink]

I'm not looking to set a static typing speed for a Type call. What I want here is a way for VHS to change its typing speed for every character it types, within a range.

[prithvijj]

Ehh I took a first stab at it in #580 ,
Feel free to check it out, if that helps with what you had in mind!

[wizardlink]

Tested it, awesome work! Thanks for the contribution, can't wait for it to be merged.

[meowgorithm]

Hey everyone! This is actually _great one, however I'm going to convert it into a discussion (for further discussion) until we've decided to integrate it. In general, we're aiming to be as thoughtful as possible about introducing VHS features right now given our internal capacity.

If we do decide to go ahead with this we'll convert it back to an issue.