Auto-detect and handle continues range of metrics in a module.

[rh363]

The exporter now before scraping register of Slave server sort all module metrics splitting their in multiple continues intervals based on rangeSensitivity. Next execute only one request for fetch all data's and split it in Metric objects directly in memory.

Benchmark on 20 metrics:

Pre-commit: 7.280s

After-commit: 0.641s

Is also possible to disable range and set range sentitivity settings:

useRanges: false rangeSensitivity: 10

In root config or in Module.