Add hyperspectral crop

[maliagehan]

Describe your changes
Updates crop function to return a hyperspectral image object if that is what is inputted for cropping. Function will still work on an array with x dimensions (not removing old method) because that could still be useful.

Type of update
Is this a:

• Bug fix
• New feature or feature enhancement

Associated issues
#1312

Additional context
Add any other context about the problem here.

For the reviewer
See this page for instructions on how to review the pull request.

• PR functionality reviewed in a Jupyter Notebook
• All tests pass
• Test coverage remains 100%
• Documentation tested
• New documentation pages added to plantcv/mkdocs.yml
• Changes to function input/output signatures added to updating.md
• Code reviewed
• PR approved

[codecov]

Codecov Report

Merging #1323 (e63c24e) into release-4.0 (51e36aa) will not change coverage.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##           release-4.0     #1323   +/-   ##
=============================================
  Coverage       100.00%   100.00%           
=============================================
  Files              157       157           
  Lines             6750      6757    +7     
=============================================
+ Hits              6750      6757    +7     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
plantcv/plantcv/crop.py	100.00% <100.00%> (ø)