Add "Upgrading from Godot 4.3 to Godot 4.4" page

[raulsntos]

This documents all the breaking changes in 4.4, like we did for previous versions:

• Add "Upgrading from Godot 4.2 to Godot 4.3" page #9250
• Add "Upgrading from Godot 4.1 to Godot 4.2" page #8488
• Add "Upgrading from Godot 4.0 to Godot 4.1" page #7611

Area maintainers should review the changes listed for their area. Also feel free to suggest any addition that I might have missed or make follow-up PRs.

Updated as of commit godotengine/godot@39c201c

Preview: https://github.com/raulsntos/godot-docs/blob/breaking_changes_4.4/tutorials/migrating/upgrading_to_godot_4.4.rst

[AThousandShips]

Should probably mention how Curve now enforces the value range, so min/max_value needs to be changed if the points fall outside of [0, 1]:

• Extend Curve to allow for domains outside of [0, 1]. godot#67857

[tetrapod00]

We should add a section on CSG disallowing non-manifold meshes after godotengine/godot#94321. Reference godotengine/godot#100014 (comment). For users previously using CSG just to render quads or other non-manifold meshes, we should mention that MeshInstance3D is a better node to use. It seems like this was a reasonably common use case.

I don't think there's a great blog post to link to like there was for reverse-z. The blog introducing the change is pretty light on details and doesn't mention the previously supported cases like quad or plane.

[skyace65]

@raulsntos does this still need more work or is it ready for reviews?

[syntaxerror247]

We should add a section to inform that sensor for android now need to be enabled in project settings under "input_devices/sensors/". There was previously no Project setting for it and sensors were always enabled.
This change was done in PR godotengine/godot#94799

[raulsntos]

Thanks everyone, I've added notes for all the changes mentioned.

@raulsntos does this still need more work or is it ready for reviews?

Yes, it's ready. I think it's unlikely we'll make new breaking changes at this point, so I've re-checked at godotengine/godot@39c201c and I'm taking it out of draft.

[akien-mga]

Thanks! 🥇