Build conda package

[multimeric]

As discussed with @pr4deepr.

Advantages:

• Faster installation compared to pip (I think)
• Can automatically resolve the OpenCL and other system dependencies

Blockers: aicspylibczi and npy2bdv apparently don't have conda packages. Looking into this.

How it will work:

1. I'll add a meta.yaml recipe to core/ and plugin/
2. In the short term, we can then build the conda package from that using `conda-build
3. The conda package can then get published to GitHub
4. Later we can submit it to bioconda or conda-forge so that it can be more easily installed

[multimeric]

Currently waiting on these submitted conda PRs:

• [x] aicspylibczi conda package
• [x] npy2bdv conda package
• [ ] Fix aicsimageio package