Parser Improvements

Fixing tricky parsing issues, cleaning up the codebase, and creating the first release…

Fighting Complexity

• Correct rendering of complex animations found in sandy_loading.json and lottie_lego.json.
• Extra testing related to complex paths, nested groups, multiple simultaneous transformations.

UI Polishing

• The viewer test application now rescales animations to fit in the screen.
• Updates to both the LottiePlayer and LottieFileViewer components, plus refinements to the PathRenderer.

Release Preparation

• Release process with GitHub Action.