feat: validate values from Cargo manifest automatically

This PR parses the manifest using the tomlj library and automatically calculates some values from the Cargo manifest as follows:

• crateName and libraryName

  crateName and libraryName in BindingsGeneration need to be set by the user, but they can be determined from the Cargo manifest. From the parsed manifest, this PR automatically sets these values.

• crateType

  lib.crate-type needs to be verified since staticlib and cdylib are required crate types, but users can indirectly know that after they encounter no file found errors pointing .dylib, .so, or .a files.

For these, this PR adds the class CargoPackage which contains the parsed TOML and CargoMetadata.