Add Vector2i.MAX as equivalent to Vector2.INF

[KoBeWi]

Describe the project you are working on

A sophisticated GDScript plugin.

Describe the problem or limitation you are having in your project

I'm using Vector2i and Vector3i in my project and I need a "null value" for them. With float vectors you can use Vector.INF, but integer vectors don't have equivalent. I must rely on custom constants:

const VECTOR2INF = Vector2i(999999, 99999999)
const VECTOR3INF = Vector3i(999999, 99999999, 99999999)

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Add Vector2i.MAX constant, which is Vector2i(INT_MAX, INT_MAX) - basically integer equivalent of infinity.
The same constant would be added to Vector3i and Vector4i.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

_VariantCall::add_variant_constant(Variant::VECTOR2I, "MAX", Vector2i(INT_MAX, INT_MAX));
_VariantCall::add_variant_constant(Variant::VECTOR3I, "MAX", Vector3i(INT_MAX, INT_MAX, INT_MAX));
_VariantCall::add_variant_constant(Variant::VECTOR4I, "MAX", Vector4i(INT_MAX, INT_MAX, INT_MAX, INT_MAX));

If this enhancement will not be used often, can it be worked around with a few lines of script?

Yes, with custom constants. But it's inconvenient, because they can't be global, so the code becomes verbose.

Is there a reason why this should be core and not an add-on in the asset library?

Only the workaround can be an addon.

[Calinou]

MIN constants should probably be added as well.

[ghost]

Some climits constants should probably be added as well.

[kleonc]

Related: #2411 (currently there are no min/max constants for ints exposed whatsoever).

[Chaosus]

Note that Vector2i/3i uses signed 32-bit integer, so INT_MAX value will be (2,147,483,647) for them (while the size of standard integer in Godot is signed 64-bit which is much larger).

[Calinou]

Note that Vector2i/3i uses signed 32-bit integer, so INT_MAX value will be (2,147,483,647) for them (while the size of standard integer in Godot is signed 64-bit which is much larger).

Note that if #7210 is implemented, INT_MAX would vary depending on the build type.