[Feature Request] Support custom tags for Dropwizard metrics

[BartekBanachowicz]

Add the possibility to add custom tags from the builder level .addCapability(new Metrics5Capability(meterRegistry). The final result should allow to create a new Metrics5Capability with a List of tags or Map<String, String>.

[DRM2001]

Hi! It's the first time contributing here. Is it ok if I share my attempt so I could get some feedback on it?

[BartekBanachowicz]

Go ahead @DRM2001 ☺️