Ability to control entry/exit animations of RotateAnimatedText

**Is your feature request related to a problem? Please describe.**
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Currently. there is no way to control the direction of `RotateAnimatedText` for entry/exit animations.

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

* Ability to override exit animation for example to fade out and up or out and down.
* Ability to override entry animation for example to fade in and down or in and up.

**Describe alternatives you've considered**
Creating a custom text animation appears to be the only valid alternative, however, I feel like this can be built into the current widget.

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

[animate_do](https://pub.dev/packages/animate_do) has some examples of fading options:
### FadeIn Animations
* FadeIn
* FadeInDown
* FadeInDownBig
* FadeInUp
* FadeInUpBig
* FadeInLeft
* FadeInLeftBig
* FadeInRight
* FadeInRightBig
### FadeOut Animations
* FadeOut
* FadeOutDown
* FadeOutDownBig
* FadeOutUp
* FadeOutUpBig
* FadeOutLeft
* FadeOutLeftBig
* FadeOutRight
* FadeOutRightBig

Look at the RotateAnimatedText widget in the lib/ directory to understand its current animation logic. The issue requests adding parameters to control entry and exit animation directions (like fade in/out with up/down). Check how other animated text widgets in the package handle similar customization. The goal is to extend RotateAnimatedText's constructor to accept new animation direction parameters and update its build method to apply them.

Written by the indexing model from the issue text.