chore: add metadata to Cargo.toml

Author: jvatic

Cargo.toml

@@ -1,8 +1,13 @@
 [package]
 name = "sql-schema"
+description = "Declarative SQL schema migrations"
+keywords = ["sql", "schema", "migration", "migrations"]
+categories = ["development-tools", "command-line-utilities", "database"]
 version = "0.2.0"
 edition = "2021"
 license = "Apache-2.0"
+authors = ["Jesse Stuart <[email protected]>"]
+repository = "https://github.com/jvatic/sql-schema"
 include = ["src/**/*.rs", "Cargo.toml", "LICENSE.txt"]
 
 [dependencies]