feat: Move ID tests into their own crate with a CLI (#177)

* fix: ID tests not in correct directory

* refactor: Move game-id test logic into its own crate

* id-tests: Add CLI that reads JSON input

* id-tests: Update crate docs

* Remove node ID test

* id-tests: Don't try to parse unneeded info

* id-tests: Enable cli feature by default

crates/lib/tests/game_ids.rs

@@ -0,0 +1,11 @@
+#![cfg(all(test, feature = "game_defs"))]
+
+use gamedig::GAMES;
+
+use gamedig_id_tests::test_game_name_rules;
+
+#[test]
+fn check_definitions_match_name_rules() {
+    let wrong = test_game_name_rules(GAMES.entries().map(|(id, game)| (id.to_owned(), game.name)));
+    assert!(wrong.is_empty());
+}