Transform "info.yaml" into "info.json"

I have transformed all the yaml files to JSON files pretty much as is. So, I haven't really followed the spec in the issue (my internet was down, so I couldn't check).

There's also a validator now in .ci. The algorithm is generic and it uses 4 json template files to specify the desired format for mandatory and optional keys. @Deevad Can you change the spec files to what you want and fix up 1 of the productive files (e.g. ep24) to match? This will then make the pipeline go red, and I can take care of fixing up the remaining files to comply.

We'll also need to fix the credits from ep31 onwards.

For where you do not remember the software version, we can skip that key - fill in what you remember, and I'll mass query/replace the rest.

We can also add more keys later, e.g. I will want to autogenerate episode titles, so that we can use them on the website.

Closes #130 (closed)