Add example of Lottie animation

[ithinkihaveacat]

The snippet will go on https://developer.android.com/training/wearables/tiles/animations.

The lottie.json is a copy of https://github.com/google/lottie-tools/blob/main/tests/spec/valid/shape_transforms_animated.json.

Looks like this on an API 36 emulator:

Screen_recording_20250730_190040.mp4

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• wear/src/main/java/com/example/wear/snippets/tile/Animations.kt:321, tag android_wear_tile_animations_lottie

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[ithinkihaveacat]

FYI @NedaTop.

[shumelchyk]

LGTM but requires updating branch to resolve merge conflict