Remove axis indices and nameddims

[kescobo]

Because those packages depend on very old version of ArrayInterface, and aren't really being maintained. There are also a couple of breaking changes

💥 Breaking Changes

• Indexing with single feature / sample string or regex now returns an abundance value instead of a single-cell CommunityProfile
• To index features (rows) with a string, you now need to use the string representation, eg "s__Some_species" instead of the feature name (eg Some_species). To match the name, you can still use Regex