In its current state the oik-block plugin has two different roles

1. Prototype blocks for oik based shortcodes.
2. Logic to determine content compatibility with the block editor.

In the future, users will no longer need both. Once all content has been converted to blocks there will be no need for compatibility analysis.

So we should rename the plugin to reflect the fact that we’ll support multiple blocks.
And extract the content compatibility logic into a separate plugin - which could be called oik-block until we come up with a better name.

The reason for doing the rename first is to retain the Git change history.