UI: Main page - Select animation

We would like to replace the UI functionality of cycling to the next/previous animation with a dropdown menu that allows the user to pick the specific animation they want to play from a list.

Acceptance Criteria

• [ ] The animation dropdown shows the name of the currently playing animation as its current value.
• [ ] The animation dropdown shows a list of active animations (configured from the Animations page) in the dropdown options list.
• [ ] Selecting a dropdown option starts playing that animation.

Design

https://www.figma.com/file/RMYWHeXJoDErWii1jm8C7k/Xebow?node-id=1%3A3

Per our discussion in slack, feel free to assign this to me