I’m looking to reproduce something like the following in Makie:

```
using PyPlot
const PolyCollection = PyPlot.matplotlib.collections.PolyCollection
polygon = [[0.0, 0.0], [1.0, 0.0], [0.0, 1.0]]
# force new axes
ax = PyPlot.axes(label=string(Base.UUID(rand(UInt128))))
ax.set_aspect(1.0)
# quite clumbsy
grid(xs, ys) = collect(reinterpret(reshape, Int, reshape(collect(Iterators.product(xs, ys)), :))')
offsets = grid(1:10, 1:15)
# based off https://github.com/matplotlib/matplotlib/blob/40862a32e86ed3a9a67790dc249da13971f1a37d/lib/matplotlib/axes/_axes.py#L4886-L4892
poly_collection = PolyCollection(
[polygon],
offsets = offsets,
edgecolors = "face",
facecolors = rand(n, 4),
transOffset = matplotlib.transforms.AffineDeltaTransform(ax.transData),
)
(xmin, xmax) = extrema(offsets[:, 1])
(ymin, ymax) = extrema(offsets[:, 2])
corners = ((xmin, ymin), (xmax, ymax))
ax.update_datalim(corners)
ax._request_autoscale_view(tight=true)
ax.add_collection(poly_collection, autolim=false)
display(ax.figure)
ax.figure.savefig("poly_collection.svg")
```

Extra bonus if the SVG output can use an `href`

instead of inlining the polygon path repeatedly.

This is how matplotlib implements e.g. hexbin.