feat: draw multiple connections in node link visualization

If there are multiple edges between two nodes, draw multiple connections between these nodes.

This is a draft, what may be considered is:

• a configuration to turn this off and on → added in 7f557ffc
• Leo gave an example of a person being both an actor and director. I can make a query for that, but this does not currently result in multiple edges between nodes being returned. To enable that, we would probably need to update the backend / query parsing to allow for this as well. → fixed with e1a5768e

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added 3 commits

• fe288617 - feat: draw multiple edges
• 71105fb2 - style: apply format on save
• e1a5768e - refactor: remove unnecessary preprocessing of node link graph

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added 1 commit

• 398ce0b1 - fix: linter remark

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changed the description

added 7 commits

• 398ce0b1...95500ef1 - 5 commits from branch main
• 6099cbcd - feat: draw multiple edges
• d2ca918a - refactor: remove unnecessary preprocessing of node link graph

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approved this merge request

@decode ship it! only needs a rebase

added 18 commits

• d2ca918a...12660fc1 - 16 commits from branch main
• c0390c3a - feat: draw multiple edges
• b3535d17 - refactor: remove unnecessary preprocessing of node link graph

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added 1 commit

• 7f557ffc - feat: add config option for multiple edges

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merged

This MR is included in version 1.134.0

The release is available on GitLab release.

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