export num of bridges per ratio into prometheus
Can we add a metric to see how many bridges are per ratio? Something like: tpo/network-health/onbasca#152 (comment 2888840)
We could use a counter with a label for the ratio. The problem is that prometheus doesn't handle well having too many different values for the label. We could to pack the ratios together on 0.1 steps and decide a maximum value that we just count together everything above that. I'm not sure if we'll be able to plot this nicelly in graphana or if there are better tools in prometheus for this.