Support Blender 3.x and 4.x

[carson-katri]

This adds a simple 4.x check for accessing inputs/outputs.

I've also made changes to the store helper to support passing a custom domain.

[github-actions]

PR Preview Action v1.4.4
🚀 Deployed preview to https://carson-katri.github.io/geometry-script/pr-preview/pr-35/
on branch gh-pages at 2023-11-15 23:45 UTC

[alphadito]

There's one more version check needed here.

if IS_BLENDER_4:
  result = geometrynodegroup(node_tree=node_group, *args, **kwargs)
else:
  result = group(node_tree=node_group, *args, **kwargs)

[carson-katri]

Good catch, thanks