ABOUT DefaultTextStyle

**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 [ For defaultTextStyle 2 child widgets are needed some parent widgets like sliverboxadapter does not take multiple child widgets so every animated text needs individual textstyle]

**Describe the solution you'd like**
Keeping DefaultTextStyle inside AnimatedTextKit before animatedTexts:[] like

AnimatedTextKit( DefaultTextStyle()
animatedTexts:[]
)

**Describe alternatives you've considered**
used textstyle individually for multiple texts

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