An example of manim pi creature scene with different emotions of them

Here we found some pi creatures: https://www.3blue1brown.com/images/pi-creatures/happy.svg and so on, the "happy.svg" can be replaced by other "modes" that appear in 3b1b's video source code (like "hooray" and "sad"). These pi creatures are shown [here](https://github.com/CaftBotti/manim_pi_creatures). Do not use for commercial purposes.

Here is an example video. A [**video tutorial**](https://www.bilibili.com/video/BV1iT411b7DL/) for how to make a 3b1b-like pi creature video is available. (8 Jan 2023)

https://user-images.githubusercontent.com/111475301/224537098-3a42075d-371b-4c15-9e84-a3ef16f9ceb4.mp4

Up to now we found these pi creatures:

1. alien
2. angry
3. awe
4. concentrating
5. concerned_musician
6. confused
7. conniving
8. dance_1
9. dance_2
10. dance_3
11. dance_kick
12. dejected
13. erm
14. frustrated
15. gracious
16. guilty
17. happy
18. hesitant
19. hooray
20. horrified
21. maybe
22. miner
23. monster
24. plain
25. pleading
26. pondering
27. raise_left_hand
28. raise_right_hand
29. sad
30. sassy
31. shruggie
32. sick
33. speaking
34. surprised
35. tease
36. thinking
37. tired
38. wave_1
39. wave_2
40. wave_3
41. well

These designs are not from 3b1b's videos, collected from some manim users:
1. hello
2. running
3. salute
4. thumb_up

该 issue 需要一个使用不同情绪的 pi creatures 示例场景。查看链接的仓库 (CaftBotti/manim_pi_creatures) 以了解可用的 SVG 文件。在 3b1b videos 仓库中查找现有的 manim 场景示例，以理解其结构。创建一个新的 Python 文件，导入 manim 和 pi creature 的 SVG，然后在几个情绪状态（例如 happy、sad、surprised）之间制作动画过渡。通过本地渲染场景进行测试，以验证动画是否正常工作。

由索引模型根据 Issue 内容生成。