Add uvx_galaxy engine type

[mvdbeek]

Skips cloning and run.sh to go directly for the galaxy entrypoint. Is much faster and cleaner to boot, and you can follow along the invocation in the UI if you like.
Does not yet install conditional dependencies.

[bgruening]

That is cool, looks like a nice default for CIs :-)

[mvdbeek]

That, but also this is just way faster, makes use of galaxyproject/gravity#126 and won't fall apart in the many ways local virtualenv management can fail us ... i will work on making this the default if uv is installed, then recommend that people use uv.

[jmchilton]

If you’re going to work on swapping the default - maybe default to just packaging Galaxy with Planemo and use that as the default? Or does that make a Planemo install on conda too hard?

[mvdbeek]

I am surprised you're in favor of that :). Do you want a separate package for that ? planemo-app ?

[jmchilton]

I started decomposing the packages for Planemo a decade ago I think - this was always the goal I think. Maybe Planemo has its current dependencies and Galaxy-planemo is a Planemo + galaxy bundle?