update and fix: compose kcg

[meirdev]

Recently I get to work with goflow2, and I found that the Traffic (ClickHouse) dashboard does not work. I also had trouble listening to messages from Kafka with a script that didn't run with docker-compose.

I fixed the issues and improved other things that I found would be useful to others.

Fixes:

• Grafana dashboard Traffic (ClickHouse) now working with the official ClickHouse datasource plugin.

Features:

• Allow anonymous access to Grafana dashboards as viewers.
• Monitor ClickHouse server with Prometheus and Grafana.
• New view: flows_raw_view to simplify the query of flows_raw table and show the data in a more readable way.
• Use docker volumes to persist data from running containers.

Upgrades:

• Grafana version from 9.4.3 to 11.5.0.
• ClickHouse version from 24.11.1.2557 to 24.12.
• Prometheus version from 3.0.1 to 3.1.0.

Refactors:

• Use sql files to initialize the database instead of bash script (more easy to work with).
• Folders structure.

[lspgn]

Thank you!
I'll have a look, it's quite a large PR so it will take me some time to go through it :)