[Migrated] Operator Overlaoding support

Issue automatically imported from old repo: https://github.com/EmbarkStudios/rust-gpu/issues/1149
Old labels: t: enhancement
Originally creatd by Makogan on 2024-05-01T21:25:10Z

Currently, it seems that rustgpu does not support operator overloading (there is no ops module under spirv_std, and none of the examples seem to do this).

This is useful because although linear algebra is the most popular mathematical representation for transformations in computer graphics, it is not the only option.

For example, I currently use projective geometric algebra for skin animations. To do this I need to define a multivector type on the shader that is capable of addition, multiplication, scalar multiplication...

Of course, one can work around the issue by defining methods, but this is less ergonomic than having operators.

Inizia ispezionando l'area spirv_std, in particolare l'assenza segnalata di un modulo ops, e confronta gli esempi esistenti sull'uso degli operatori. Il lavoro sarà completo quando i tipi shader personalizzati potranno usare operatori come addizione, moltiplicazione e moltiplicazione scalare, invece di richiedere soluzioni alternative basate su metodi.