Allow managing columns in new Logs view

[bastrich]

Is your feature request related to a problem?

1. "Timestamp" and "Body" columns are hardplaced and I can't remove them.
2. All the columns don't allow to change their width.

Describe the solution you'd like

1. Allow removing and adding "Timestamp" and "Body" columns.
2. Allow changing columns width.

Describe alternatives you've considered

Additional context

Add any other context or screenshots about the feature request here.

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[welcome]

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