animatedTexts option to draw one after another

**Is your feature request related to a problem? Please describe.**
I would like to use TypewriterAnimatedText then change the font (size up and bold) for one word and then continue with the rest of the text.

**Describe the solution you'd like**
Would like to see a property under AnimatedTextKit that makes animatedTexts elements continue in a column one after another instead of replacing each other

**Describe alternatives you've considered**
Creating my own Stateful Widget with AnimatedTextKit as the number of TypewriterAnimatedText I would like to show and use onFinished for each one to start drawing the next one.

**Additional context**

Look at the AnimatedTextKit widget and its animatedTexts property. Understand how the current animation cycle works and where the onFinished callback is triggered. The goal is to modify the kit to sequence multiple AnimatedText widgets instead of replacing them. Check existing examples and tests to see how animations are structured.

Rédigé par le modèle d'indexation à partir du texte de l'issue.