Image testing and cli updates

[wtgee]

Code:

• Moved functions from panoptes.utils.images.__init__.py to panoptes.utils.images.misc except for make_pretty_image, which has circular dependencies if moved.
• Remove show_stamps and animate_stamp from plot function. These have moved to the pipeline and data repos.

CLI:

• Added panoptes-utils image cr2 to-jpg to replace cr2_to_jpg bash script.
• Added panoptes-utils image watch --to-jpg --to-fits --solve <DIR> command for processing a directory.

Testing:

• Add --plate-solve marker for testing to default options on GHA. Install astrometry.net into GHA environment.
• Download CR2 file for testing in GHA.
• Local testing only uses test-database=memory but GHA uses test-database=all.

[codecov[bot]]

Codecov Report

Merging #294 (3c99f0f) into develop (dec1aca) will increase coverage by 12.66%. The diff coverage is 89.26%.

@@             Coverage Diff              @@
##           develop     #294       +/-   ##
============================================
+ Coverage    75.10%   87.76%   +12.66%     
============================================
  Files           25       26        +1     
  Lines         1643     1537      -106     
============================================
+ Hits          1234     1349      +115     
+ Misses         409      188      -221     

Impacted Files	Coverage Δ
src/panoptes/utils/images/misc.py	70.45% <70.45%> (ø)
src/panoptes/utils/images/fits.py	88.50% <94.00%> (+35.20%)	:arrow_up:
src/panoptes/utils/config/helpers.py	98.27% <100.00%> (+27.78%)	:arrow_up:
src/panoptes/utils/error.py	97.29% <100.00%> (+1.46%)	:arrow_up:
src/panoptes/utils/images/__init__.py	92.30% <100.00%> (+24.45%)	:arrow_up:
src/panoptes/utils/images/cr2.py	100.00% <100.00%> (ø)
src/panoptes/utils/images/focus.py	100.00% <100.00%> (ø)
src/panoptes/utils/images/plot.py	48.38% <100.00%> (+27.33%)	:arrow_up:
src/panoptes/utils/serial/device.py	100.00% <100.00%> (ø)
... and 2 more

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