Unify crate metadata into workspace metadata

### Suggested Changes
Unify crate metadata into workspace metadata. See [Cargo docs](https://doc.rust-lang.org/cargo/reference/workspaces.html#the-package-table)

### Why Is This Needed?
Currently, each crate in the workspace maintains its own metadata about the project. However, some of this data is duplicated across crates.

### Dependencies
Related to #152 #154 