WIP: add a way to do reprojection without dumping dask arrays to memory maps

[astrofrog]

Very much just work in progress, not ready for testing

[codecov]

Codecov Report

Attention: Patch coverage is 85.10638% with 7 lines in your changes missing coverage. Please review.

Project coverage is 84.67%. Comparing base (ce6538c) to head (a9f20ba).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
reproject/array_utils.py	86.36%	3 Missing ⚠️
reproject/common.py	78.57%	3 Missing ⚠️
reproject/interpolation/core.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #532      +/-   ##
==========================================
- Coverage   88.86%   84.67%   -4.19%     
==========================================
  Files          28       28              
  Lines        1374     1416      +42     
==========================================
- Hits         1221     1199      -22     
- Misses        153      217      +64     

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