Adding FAO/GHG/1/DROS-A and FAO/GHG/1/DROS-E to the public catalog

[momegahed]

Will be followed up by an email from [email protected]

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[schwehr]

Thank you for your pull request. Please explain how the datasets here are different from:

1. https://github.com/google/earthengine-catalog/blob/main/catalog/FAO/FAO_GHG_1_DROSA_A.jsonnet
2. https://github.com/google/earthengine-catalog/blob/main/catalog/FAO/FAO_GHG_1_DROSE_A.jsonnet