merge improvements and new metrics from another ``graftorio`` fork

[Kariton]

Hello again. :)

Would you have a look at this repository? -> https://github.com/TheVirtualCrew/graftorio

There are a few more Prometheus metrics available that are quiet helpful. for example:

• factorio_evolution
• factorio_mods
• factorio_seed
• factorio_research_queue

And also a "better" README.MD and some example dashboards. I currently try to get a few different dashboards working and would like to share them later. ATM im struggling with some value mismatches between grafana and ingame metrics.

And: one of your metric description is not correct: factorio_logistic_network_available_construction_robots

the total number of construction robots in the network (idle and active + in roboports)

should be like that: factorio_logistic_network_available_logistic_robots

the number of logistic robots available for a job

[remijouannet]

Hello, the metric description is fix, don't hesitate to open a PR if you have any improvement you want to push