sequencing

We need some good graphics for the main sampler screen. This is where you can do rudimentary editing of the samples that are played in the sequencer.
There are two screens. The main screen with the controls:

• Volume (this one may be changed later)
• Speed (Playspeed. The sample also pitches up or down)
• Filter (in the middle the sound is unchanged, away from center it engages either hi-pass

It isn't obvious to users that a search result URL is stable (until deleted).

To make this more obvious, we should add an explicit
Share results section, with a "Copy URL to clipboard" text that does what it says

When running nextclade dataset list the output is ~200 lines of information. The number of datasets may grow in the future and so would the output. It would be super handy to have a flag that reduces the verbosity of the list output. Possible truncated output might be:

Dataset
-------
Friendly name        : SARS-CoV-2
Safe name             : sars-cov-2
Default reference   : MN90894