feat(plotnine): implement network-force-directed (#5437)

## Implementation: `network-force-directed` - python/plotnine

Implements the **python/plotnine** version of `network-force-directed`.

**File:**
`plots/network-force-directed/implementations/python/plotnine.py`

**Parent Issue:** #990

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:robot: *[impl-generate
workflow](https://github.com/MarkusNeusinger/anyplot/actions/runs/24952837092)*

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Author: github-actions[bot]