Refactor text to optimize performance

[ethanshar]

Description

Don't Merge, just review

I did a few things here

• Create new hooks: useModifiers and useThemeProps - this should help us replace asBaseComponent
• Added support in ThemeManager to set a ThemeContext - This should replace the static context type we set on UIComponent
• Refactor Text component to a function component to use the all of the above

Due to this big change, I left with some issues I had to resolve

• because Animated.createAnimatedComponent can't accept function components, only class components. I created a new (very) simple HOC called asClassComponent. All it does is convert a function component to a class component (we need this for very rare cases, specifically in our WheelPicker.Item component)
• I ignored a TS issue that now appears in FloatingPlaceholder component - I couldn't figure out a solution for this. If you have ideas, do share..

Changelog

Refactor and improve Text component performance