Add more details to the the COG specifications

[JanssenBrm]

This request is related to the following guideline:

ID	Requirement	Description
PROV-REQ-01	EO project results with respect to raster data, shall be delivered as cloud-native datasets.	Where possible, cloud optimized GeoTIFF is preferred. For more complex datasets, CF-Compliant netCDF is a good alternative. Use of the still evolving GeoZarr format requires confirmation by APEx and may result in future incompatibility if the selected flavour is not standardized eventually.

ESA has requested to provide more details on the COG specifications, similar to SentinelHub at https://docs.sentinel-hub.com/api/latest/api/byoc/#constraints-and-settings

[JanssenBrm]

Also adding the Sparkgeo team to the ticket as some of our recommendations could also be based on the visualization requirements in the Geospatial Explorer?