Get default number of threads and CPUs with get_config_int(''VersionStore.NumCPUThreads')

[maxim-morozov]

Is your feature request related to a problem? Please describe.
Users don't have visibility what default number if threads we set. When you set number of thread with set_config_int('VersionStore.NumCPUThreads', 90) , the get call will return 90, but before setting it, there is no way to know what default number if threads Arctic is using. Improving on this would help to optimize the for customer use cases

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[maxim-morozov]

sync