add meson support

tests/repo.rs

@@ -1,10 +0,0 @@
-use gentoo_utils::ebuild::repo::Repo;
-
-#[test]
-fn test_read_repo() {
-    let repo = Repo::new("/var/db/repos/gentoo");
-
-    for category in repo.categories().unwrap().map(|cat| cat.unwrap()) {
-        for _ in category.ebuilds().unwrap().map(|ebuild| ebuild.unwrap()) {}
-    }
-}