fix glam 0.33 breakage

[Firestar99]

glam 0.33 introduced a feature for each type of vector to speed up compile times. This caused rust-gpu to break when used with glam 0.33, which is completely our fault, since we declare our dependency on glam to be forwards compatible even across breaking changes:

glam = { version = ">=0.30.8", default-features = false }

The simple fix is to just require glam 0.33, like the second commit does:

-glam = { version = ">=0.30.8", default-features = false }
+glam = { version = "0.33.0", default-features = false, features = ["u32", "i32", "f64"] }

However, there are a few important libraries that still depend on an older glam version, like the most recent release of bevy_math still depending on glam v0.30.*.

Instead, I would like to propose that we have one feature for each glam version, and default to the most recent one:

[features]
default = ["glam_0_33"]
glam_0_33 = ["dep:glam_0_33"]
glam_0_32 = ["dep:glam_0_32"]
glam_0_31 = ["dep:glam_0_31"]
glam_0_30 = ["dep:glam_0_30"]

And within lib.rs we'll switch on the feature gate to select the glam version:

#[cfg(feature = "glam_0_30")]
pub use ::glam_0_30 as glam;
#[cfg(feature = "glam_0_31")]
pub use ::glam_0_31 as glam;
#[cfg(feature = "glam_0_32")]
pub use ::glam_0_32 as glam;
#[cfg(feature = "glam_0_33")]
pub use ::glam_0_33 as glam;

Note that this does not support multiple glam versions simultaneously, but I don't think that matters. Maintaining this is cheap, so we can just maintain backwards compatible for whatever N versions that we can be bothered to.

Expect a crates alpha release soon after merging this.

close #602

[LegNeato]

Agreed this is a good fix.

Can we put raw glam in cargo-deny w/ an override for so we can't use it directly w/o CI failing?

[nazar-pc]

Docs failed to build with these changes: https://github.com/Rust-GPU/rust-gpu/actions/runs/27157018177/job/80162386469