Kubes Forge addon that adds panes, and variants that are more compatible with CTM. Specifically, it was built for "kubejs-forge:2001.6.5-build.16", it probably works on basically any build past that but that's the one I'm working off of.
This addon adds five block builders: Panes/Connective Panes, Bars/Connective Bars, and Connective Glass
Connective variants cull inside faces between other blocks of the same parent builder, so mixing glass will make one seamless whole without visible geometry on the inside.
There are differences between how vanilla handles these and how this addon handles them, in that both panes and bars now require a cross-shaped "top" texture, as opposed to only panes needing a top texture, and a line at that. This is due to me being lazy and not wanting to figure out how to rotate assets, or make KubeJS handle it since the texture is duct-taped together as-is.
Variant Tags - pane c_pane bars c_bars c_glassTo make textures work properly on panes/bars, you HAVE to use .textureAll("id:path/to/texture"), kubeJS handles textures in a weird way and this is the first fix I found. Additionally, your top texture must have the suffix "_top" (ex. glasspane_top.png), as the builder only looks for that specific one. If I feel like it, I'll make it fall back to the main texture at some point later.
