BottomTabs review and base UI structure startup

The idea was to review the BottomTab structure while implementing a base UI strategy and new processes within its scope.

• Review BottomTab general structure;
  • Add TabBar
  • Remove TabIcon
• Implement basic UI Token definition
• Implement icon component with centralized font mapping and margin awareness helper
• Implement initial path alias strategy with babel's module-resolver
• Spread the Icon component, module resolution and SPACING within the BottomTab scope

Closes #3244 (closed) / Touches #3254 (closed)

For the bottom spacing its using the SafeAreaView from react-native-safe-area-context default inset. It's close enough to most applications positioning so we should be good.

UI Reference

UI Comparison