Common Media Types

[cholmes]

Each spec lists a number of media types. We should consolidate them into a single list that each spec can reference. This came up in #884

[cholmes]

So Media Types are actually just listed in the Item spec. So I think I'm going to close this, since we're not repeating here. If the item spec was way too long I could see putting it in another file, but I think it's nicer to not have to jump around a lot. I do think #929 for rel types is one that should be consolidated. I suppose I could be ok with a file that is 'common types', and has the rels and the media in one file. @m-mohr - let me know, I don't feel strongly on this one.

[cholmes]

@m-mohr and I discussed on a call. We decided to move most of the longer table to 'best practices', as the spec should just link to IANA, it doesn't need to list what is commonly used. The table should have information on the 'special' STAC ones, like the STAC-specific ones, and cloud optimized geotiff and geotiff, at least until they are fully standardized / in IANA.

[cholmes]

Whoops, I thought the above had merged.