Prototype modular ignitectl approach

Prepare the extensible ignite cli tool, which must support:

• Installing sample ignite-3.0 node from IGNITE-13718 by "ignite init"
• Manage local sample nodes by `ignite node start|stop|list`
• Manage local node configurations by `ignite config set|get`
• Managing new ignite/cli modules by `ignite module add|remove|list` 
• Provide help for commands above

IEP which will be used for implementation:

• https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=158873958

• https://cwiki.apache.org/confluence/display/IGNITE/IEP-63%3A+REST+API+module+to+integrate+new+modular+architecture+and+management

• https://cwiki.apache.org/confluence/display/IGNITE/IEP-55+Unified+Configuration

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