Video Subject: Style the VideoController speed options the same as flip book

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Package

lib-classifier

Describe the problem

The flip book is an incoming feature for FEM. The video subject viewer speed controls and the flip book speed controls should be styled the same for consistency.

Describe the solution you'd like

An example of current video subject viewer VideoController speed controls:

Zooniverse team members can see the work in progress speed controls for the flip book here:
https://projects.invisionapp.com/prototype/Flipbook-Viewer-cl7ar8qa402m83i01w6uvj5hq/play/f32b2cd2

Additional context

This issue documentation is sorted into the Video Annotator project board. It's part of an effort to improve the video subject viewer code for migrating Woodpecker Cavity Cam to FEM.

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Noting that the duration of the subject should also be rounded to only 2 decimal points.