Avoid hashing resources where possible

[aclysma]

There are cases where out of convenience I'm just passing around raw data and hashing it instead of passing around just a hash. This is fine for prototyping but some of the data types that are being hashed are not trivial in size. This includes strings and vulkan config types (types.rs). In some cases we can benefit from a struct that contains both the hash and the original value the hash is based on, in other cases we can just use the hash. It would be ideal if we can have debug-only detection of hash collisions.