[FEATURE] Reliability checker

[VeckoTheGecko]

Describe your suggested improvement
Easy check the reliability of an news organisation by typing /reliability <article_url> (or similar). This would be helpful to quickly identify organizations that are known for non-factual reporting. The dataset won't be maintained by Climate Town, but instead using another organization who records data on this and has API access (maybe Newsguard? Haven't looked too hard for a provider yet).

Describe the benefit
Highlighting trustworthiness of websites easily.

Would you be capable/willing to implement the improvement?
Yes (but I'm away for some months so definitely backburner)