Add Glider DAC Format Version 2 files

[mwengren]

This PR moves the current Glider DAC File Format V 2.0 files referenced in the DAC documentation site to this repo as 'gold standard' files for IOOS glider data submission.

Future changes to this repo may include adding other classifications for existing moored/shore station example files under the /datasets directory to help users navigate.

Once this PR is merged, the Glider DAC documentation site will be updated to link to this repo to allow users to download the example files.

For reference, these files originated in the ioos/glider-dac repo at this location: https://github.com/ioos/glider-dac/tree/gh-pages/_nc/template.

cc @MathewBiddle @kbailey-noaa @ocefpaf @kerfoot

[MathewBiddle]

I like the organization here

datasets/gliders/

Reviewing the Gold Standard Examples website, are any of those examples we want to bring over here as well?

I know ATN has a trajectory template that would be good to add as well https://github.com/ioos/ioos-atn-data/issues/42. To note, they will also have a profile template. But that will be separate from this PR.

IMO this looks good!

[mwengren]

Hey @MathewBiddle the first three dataset examples on that page (Fixed Station - Morro Bay and Moored Buoy - C10 met and currents) are actually the source for the three datasets currently in this repo: https://github.com/ioos/erddap-gold-standard/tree/main/datasets.

We need to move that page over here, as previously mentioned in https://github.com/ioos/erddap-gold-standard/issues/63, and add additional datasets like ATN, definitely.

The current Gold Standard Datasets page was created before this repo was, and we never went back to update it or move it over to this repo. In addition to the RA portal links currently in that page, dataset links should go to the Gold Standard ERDDAP as well: https://standards.sensors.ioos.us/erddap/info/index.html. I'm going to add more notes about that to the issue above.

[mwengren]

@MathewBiddle @srstsavage I haven't updated the https://github.com/ioos/erddap-gold-standard/blob/main/erddap/content/datasets.xml file accordingly. Any help with that would be most appreciated.

I suppose it could either be committed directly to this PR, or added in a subsequent PR to make these new datasets actually deploy in ERDDAP/Docker, and on https://standards.sensors.ioos.us/erddap/. Let me know your thoughts.

Also within scope is re-categorizing the existing 3 datasets under an appropriate sub-folder similar to the /gliders one I used here, probably more easily done in a subsequent PR by one of you :).