feat: accept file handles as well as paths

[tlambert03]

this makes it possible to use:

with open('myfile.nd2', 'rb') as fh:
    nd2file = nd2.ND2File(fh)

closes #1

[codecov]

Codecov Report

Merging #161 (c622008) into main (4ea166e) will decrease coverage by 0.12%.
The diff coverage is 89.65%.

@@            Coverage Diff             @@
##             main     #161      +/-   ##
==========================================
- Coverage   93.88%   93.77%   -0.12%     
==========================================
  Files          17       17              
  Lines        2340     2362      +22     
==========================================
+ Hits         2197     2215      +18     
- Misses        143      147       +4     

Impacted Files	Coverage Δ
src/nd2/_parse/_chunk_decode.py	86.76% <72.72%> (-0.65%)	⬇️
src/nd2/_util.py	93.05% <80.00%> (-2.40%)	⬇️
src/nd2/readers/protocol.py	91.01% <95.65%> (+0.87%)	⬆️
src/nd2/nd2file.py	97.35% <100.00%> (-0.03%)	⬇️
src/nd2/readers/_legacy/legacy_reader.py	90.34% <100.00%> (ø)
src/nd2/readers/_modern/modern_reader.py	92.02% <100.00%> (ø)

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[codspeed-hq]

CodSpeed Performance Report

Merging #161 will not alter performances

_{Comparing accept-file-handle (c622008) with main (4ea166e)}

Summary

✅ 13 untouched benchmarks