feat: add testing infrastructure

src/lib.rs

@@ -0,0 +1,2 @@
+pub mod conf;
+pub mod redis_ctrl;

tests/test_conf.rs

@@ -0,0 +1,6 @@
+use lj_rust::conf;
+
+#[test]
+fn it_adds_two() {
+    assert_eq!(4, 4);
+}