support more array types, add imshow

[tlambert03]

• fixes some bugs
• adds imshow() convenience
• adds ndv.data convenience
• adds/extends support for more array types
• tests all examples

[codecov]

Codecov Report

Attention: Patch coverage is 91.95402% with 21 lines in your changes missing coverage. Please review.

Project coverage is 69.14%. Comparing base (1b07c50) to head (2f3e4fd).
Report is 2 commits behind head on main.

❗ Current head 2f3e4fd differs from pull request most recent head b626d4b

Please upload reports for the commit b626d4b to get more accurate results.

Files	Patch %	Lines
src/ndv/viewer/_data_wrapper.py	93.98%	11 Missing ⚠️
src/ndv/viewer/_viewer.py	63.15%	7 Missing ⚠️
src/ndv/util.py	90.90%	2 Missing ⚠️
src/ndv/data.py	96.42%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #3      +/-   ##
==========================================
+ Coverage   62.01%   69.14%   +7.13%     
==========================================
  Files          10       12       +2     
  Lines        1103     1157      +54     
==========================================
+ Hits          684      800     +116     
+ Misses        419      357      -62     

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