Update Use Cases to 0.2.0

[gselzer]

This PR updates all of the Use Cases with new graphics that reflect UI updates, but perhaps more importantly, they provide new admonitions at the start of each use case describing:

• The exact Mamba environment used
• The PyImageJ endpoint used
  

[gselzer]

Notably, I did not update the napari-imagej benchmarks - we can do that in another PR down the line if necessary

[ctrueden]

Thanks @gselzer! I like the new admonitions. One suggestion: write "Conda environment" rather than "Mamba environment", since the technology in question is Conda here; mamba is just the CLI tool that works with them.

As for the benchmarks, I think it's fine not to update them unless there was some significant infrastructure change that would impact the performance.

[gselzer]

One suggestion: write "Conda environment" rather than "Mamba environment", since the technology in question is Conda here; mamba is just the CLI tool that works with them.

While I agree "Conda environment" is more general, we try hard to use Mamba everywhere in the document, so I'd think leaving it as is would be best? I think it would also introduce a disconnect within the admonition itself, as we'd say it's a conda environment but then we're not mentioning conda in the environment setup line...