Text Shadows

[sudara]

Requires a refactor to:

• Add melatonin::ShadowedText to be held as a component member
• Modify RenderedSingleChannelShadow to take either a path or text+bounds+justification (break out all the path logic into its own method, or consider subclassing for both path/text variants)
• Add renderTextShadow to CachedShadow
• Add some cache-busting for text content, dimensions, justification in CachedShadow
• End API would look like: shadowedText.render(g, "wow", textBounds, juce::Justification::centred);