docker-compose with prometheus & grafana

[MattKetmo]

Create a docker-compose to quickly set up prometheus demo with a default grafana dashboard

[hexmark21]

Hey @MattKetmo,

I created a cosmos-watcher-stack to simplify the deployment and management of watcher instances using docker compose, along with default grafana dashboard.

Let me know what you think and if we can include a reference to it in the main repository :)
Thank you.

[MattKetmo]

Hey @hexmark21 thanks very much for this contribution 👍

Sure, I can add a section in the README to mention your repo. I'll do next week.
Or we can copy the resources directly in this repo ? As you prefer.

[hexmark21]

Thanks @MattKetmo, I appreciate it.

I think it would be better to link to my repo, as it keeps things more maintainable and allows me to update the resources independently.