feat: add to_ome_tif method

[fdrgsp]

Hey @tlambert03 , I've started working on the conversion of the nd2 files into the ome-tif format. It is definitely not finished but I think is a good starting point.

I've added a to_ome_tif() method to the package to save to disk na .ome.tif file and it is working as I want which means the I can also open the .ome.tif files in Fiji and properly load the ome metadata (also with multi position files - in this case the bio-formats importer asks the user to choose which series to open).

One thing that I understood is that we need to rearrange the ome metadata gathered form the nd2 ome_metadata() method to create as many Image objects as the number of positions (grouped by the x, y position). At the moment this is done with the _reorganize_metadata() function that I've added but maybe we can do that directly in ome_metadata().

When you have time can you have a look?

At the moment the test I've added only assert that the number of series in the tiff file is correct but it should be expanded as well.

[fdrgsp]

I didn't see you did work on it already 🤣

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #217 will not alter performance

_{Comparing fdrgsp:add_to_ome_tif (f4d3a34) with main (66f5bef)}

Summary

✅ 13 untouched benchmarks

[tlambert03]

Aw shoot, you closed it! I did start working on it cause I wasn't sure if you had time to do it after all. But I think it's very cool to see the similarities in how we did it! I'm going to reopen this, probably merge it (cause I want you as a contributor), and then consider any additional features later.

One thing I played with is not using to_dask as an intermediate which keeps it a bit leaner and allows a progress feedback,

But thank you! Reopening

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 95.45455% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 95.17%. Comparing base (66f5bef) to head (f4d3a34).

Files	Patch %	Lines
src/nd2/nd2file.py	95.45%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #217 +/- ## ======================================= Coverage 95.16% 95.17% ======================================= Files 17 17 Lines 2318 2362 +44 ======================================= + Hits 2206 2248 +42 - Misses 112 114 +2 ```

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[tlambert03]

thanks for your work on this @fdrgsp! It was very helpful to compare what you did here to what I also stumbled across. I'm going to merge this in, and then reconcile it with #216