Chore: add Cargo.toml fields to cust_core

Author: RDambrosio016

crates/cust_core/Cargo.toml

@@ -2,6 +2,10 @@
 name = "cust_core"
 version = "0.1.0"
 edition = "2021"
+license = "MIT OR Apache-2.0"
+description = "Core library for cust that can be shared across CPU and GPU"
+repository = "https://github.com/Rust-GPU/Rust-CUDA"
+readme = "../../README.md"
 
 [dependencies]
 vek = { version = "0.15.1", default-features=false, features=["libm"], optional = true }