[Feature] - Change background layout to hexagons

[MariusBrill]

Is your feature request related to a problem? Please describe.
The layout of the Service Dependency Graph will receive a major update in v5.0.

For this, we plan a hexagon-like layout/design, see the attached screenshot.

In this ticket, the background layout should be implemented.
For this, possible frameworks (e.g., d3-hexbin) for rendering the hexagons need to be evaluated. Based on the evaluation, the background should be implemented.

The placement of nodes in not part of this issue.

Describe the solution you'd like
A hexagon-like background implemented in the Service Dependency Graph, see attached screenshot.

Additional context