[FR]Playback tempo UI secondary drop down

[InfinityLoop1308]

Discussed in #886

^{Originally posted by glassjaw March 8, 2025}
Current slider UI is very flexible and nice for fine tuning! Would also love a drop down with common playback tempos for quick adjustments

[github-actions]

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[InfinityLoop1308]

Decided not to do to keep UI simple.