Animate growing plants

[emilyb7]

We need a different animation for each growing plant.

This issue will be broken down into smaller tasks nearer the time.

This will involve a significant amount of research and trial and error!

• [x] cactus animation: https://github.com/CYPIAPT-LNDSE/goals-app/issues/181
• [ ] cactus optimisations #183
• [ ] flower animation #184
• [ ] handle different animations for different goals #185

[emilyb7]

new assets on drive!

[emilyb7]

i like both cactuses, but we need to choose one. @shiryz @amgoforth thoughts?

[emilyb7]

[shiryz]

flower animation so far: https://shiryz.github.io/flower-animation/