131 generate completeness reports

[abradley60]

• Utility function and cli for monitoring completeness
• Two separate main functions have been created to check scene level and burst level product completeness
• The process for each is described in the cli documentation
• Fast scene level completeness checking for large timespans depends on Upgrades/processed scene tracking #132
• An example burst an scene completeness report is provided here - https://deant-data-public-dev.s3.ap-southeast-2.amazonaws.com/index.html?prefix=TMP/completeness_reports/

[geoscience-aman]

Reviewed and am happy with this one too, thank you.

I am not approving for now, only due to our discussion to ensure consistency between our code to query which scenes to process and this monitoring one, in terms of how the MultiPolygons are handled etc.