Make metrics config more flexible

[no1seman]

Let's divide all metrics to groups(classes) and make it possible to select which metrics turned on. Also if no any settings was set simply turn on default metrics groups(classes). Groups could be configurable with set_export() or Cartridge Role config.

Reason: each metric occupy some space in Prometheus or InfluxDB and for example not every application uses http, in that case don't need to collect tnt_http_* metrics.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 30 days

[DifferentialOrange]

Btw, if you don't use HTTP metrics in your app (i.e. do not set any HTTP middleware on any endpoints) there isn't any http_ metrics in Tarantool default metrics.