Acknowledgement for CNES funding

[tinaok]

We need to add an acknowledgment for CNES funding:

Acknowledgment

“This project was initiated using funding from CNES (PANGEO IAOCEA, contract R&T R-S23/DU-0002-025-01).”

Where should we include it in the template?

FYI:
@zawadzl

[tinaok]

Please also add link to the DOI for the 2 poster presentation at EGU, (with link to the poster pdf)

[keewis]

the first poster is for in situ data in general (not just trajectories), so I don't think it's in scope for this repo, and more suited for stac-insitu. The second one is very much in scope, though, so I'll add it, as well (funding acknowledgements seem to be very rare for stac extensions, though, I've seen one with a list of contributors, another one that acknowledges funding by ESA, and no presentation lists)