The community glossary is now live - help us define terms like 'shill'

Hey everyone, just saw the new glossary section go live! 🎉

I think this is a great idea. As someone still learning, I run into terms all the time that I have to look up. "Shill" is a perfect example—saw it in a thread last week and wasn't 100% sure.

I'll definitely be checking it out. Maybe we could add some basic observability terms too? Like the difference between metrics, logs, and traces. I had to diagram that out for myself when I started.

```mermaid
graph TD
A[User Request] --> B{Generates};
B --> C[Metric];
B --> D[Log];
B --> E[Trace];
C --> F[Trends/Alerts];
D --> G[Debugging];
E --> H[Latency Analysis];
```

Looking forward to contributing where I can!