Fix_Optimize_JSON_Lottie_Component

[mousheng]

1. move svg to folder lowcoder-design
2. All options support multiple languages
3. add attribute keepLastFrame，Prevent components from becoming blank
4. 5.change backgroundcolor follow the canvas color
5. delete MARGIN and PADDING style

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[FalkWolsky]

That is a valuable contribution. Thank you very much!
We need to check about margin / padding, as we introduced it by the current changes.
@aaron1604 will please have a look and decide.

[mousheng]

In fact, in the current version, the padding/margin setting is invalid, and during my testing, the component looks very unattractive after setting padding/margin because if you want to adjust the animation size, you can directly adjust the component size

[FalkWolsky]

Thank you very much for your valuable contribution! The "stop at last frame" is truly a good addition. We also will take care of fixing the margin/padding as you advise.