Create instrument-specific `Vendor` group CDLs for the compliance checker

[emiliom]

Leverage this package to help monitor changes in the Vendor group as well. Unlike all other groups, SONAR-netCDF4 v1 convention does not specify anything for the content of the group. So, all the content is based on echopype decisions.

• @leewujung Create small netcdf files from the Vendor group from each major echopype instrument type: ek60, ek80 and azfp.
• @emiliom Use those netcdf files to create a CDL file per group; fine-tune and prune each CDL; then incorporate each CDL into the code base

[leewujung]

@emiliom : here you can find the small Vendor-specific group nc files for the 3 instruments: https://drive.google.com/drive/u/1/folders/1mbZcGEEayglJbMat7B-sQIAvbgWz6muF

[emiliom]

Wow, thanks!!

Quick question: Is Hake-D20230621-T105410_vendor.nc an EK80 file? The other two are clearly named with an EK60 or AZFP string.

[leewujung]

Oh right, forgot to change that filename -- could you please change that? Yes it is EK80.

[emiliom]

Oh right, forgot to change that filename -- could you please change that? Yes it is EK80.

Done.