[BUG]: NodeView needs to be refactored/revised

[MosiQt]

Describe the bug
NodeView class is very big. Some parts can be encapsulated into smaller objects.

To Reproduce
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots
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Software Versions
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Firmware version: (add either official git release version or git SHA)

Additional context
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[mohsenkondori]

Done ...