Support Enhanced LRC format (Part II)

[Nafeij]

Enhanced LRC is an extension of Simple LRC Format developed for the A2 Media Player. This supports adding an optional timestamp for words, syllables, or otherwise parts of a line. It takes the format: <mm:ss.xx>.

Enhanced LRC support

• Add additional interfaces.
• Add EnhancedLrc component. Lines will have a property syllables.
• Add additional storybook example: Enhanced Lrc.

This should be backwards-compatible with previous versions.

Note: This PR depends on Part I to be merged first.

[mebtte]

Like clrc, adding new component EnhancedLrc is a better choice?