Add ngrams from coding-corpus

[Glitchy-Tozier]

Not sure where to find a corpus, but I think having access to ngrams of a mix of various programming-languages would be pretty nice.

[fohrloop]

For anyone interested, I created a code corpus called granite-code-ngrams. It contains following ngrams:

• python
• rust
• javascript
• typescript
• css (incl. scss & less)

and a mixture (40% Python, 10% Rust, 20% JavaScript, 20% TypeScript, 10% CSS) called "code". I licensed it under MIT so you could also include it in this repo if needed.