feat: image stitching in celery

[xmy314]

Description

Image stitching algorithum through celery as to not block gcom operation.
Dependencies added are cv2 and stitching. Stitching is not strictly necessary but it does make this task quite a bit easier.
Algorithum requires fairly large amount of overlap.
Resulting image is limited to 2^15 pixels sidelength.
Resulting image is warped and need to be manually corrected.

Resolves #42 #43

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

How Has This Been Tested?

• UBC forest satellite image works flawlessly.
• pavement test images works with minor artifact.
• drone image at 15 meter high works with minor artifact. some images didn't have enough overlap
• drone image at 15 meter high works flawlessly.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules