Add FIT geometry to Event Visualization

[mvishiu11]

This PR introduces FIT geometry into the EventVisualization. Following changes were made to existing code:

• added FIT detectors (FT0 and FV0) in VisualizationConstants
• added FIT-related changes to the example o2eve_config

Following files were added:

• simplified FIT detectors geometry as ROOT files
• text descriptions of the aforementioned geometry

[github-actions]

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[github-actions]

This PR did not have any update in the last 30 days. Is it still needed? Unless further action in will be closed in 5 days.