Add repository and homepage meta

Author: Kunduin

Cargo.toml

@@ -5,6 +5,8 @@ edition = "2021"
 categories = ["rust-patterns"]
 authors = ["Kunduin <kunduin@outlook.com>"]
 documentation = "https://docs.rs/enum-code"
+repository = "https://github.com/Kunduin/enum-code"
+homepage = "https://github.com/Kunduin/enum-code"
 description = "derive(Code) simplifies error handling by providing an easy-to-use enumeration of error codes"
 keywords = ["error", "error-handling", "derive", "enum"]
 license = "MIT"