TypewriterAnimatedText Want new feature

**Is your feature request related to a problem? Please describe.**
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

**Describe the solution you'd like**
A clear and concise description of what you want to happen.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.

I want the different text style in the parameter text in the typewriteranimated text so will you consider the rich text as the parameter text so it will help to create different styles in the one word

Look at the TypewriterAnimatedText widget in the codebase to understand its current text parameter handling. Investigate how rich text (like TextSpan) could be integrated while preserving the typewriter animation effect. Check existing animated text widgets for similar styling features as a reference.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.