As discussed with the product team we want to enforce kebab-case file names for
all files, with the exception of files which export a single class, in which
case they should be PascalCase and reflect the class which they export.
This will help find classes faster, and should push better naming for them too.
Some files and packages have been excluded from this linting, specifically when
a library or framework depends on the naming of a file for the functionality
e.g. Ember, knex-migrator, adapter-manager
refs https://github.com/TryGhost/Toolbox/issues/363
- the oembed service is completely standalone and could do with some
individual unit tests
- moving it out to a package allows us to draw the boundaries better and
allows us to remove some dependencies from the core package.json
