Rename folder tools to cli to keep it consistent with crate naming

cli/src/lib.rs

@@ -0,0 +1,27 @@
+#[macro_use] extern crate log;
+#[macro_use] extern crate lazy_static;
+extern crate env_logger;
+
+use std::env;
+use log::LevelFilter;
+use env_logger::Builder;
+
+lazy_static! {
+	static ref LOG_DUMMY: bool = {
+		let mut builder = Builder::new();
+		builder.filter(None, LevelFilter::Info);
+
+		if let Ok(log) = env::var("RUST_LOG") {
+			builder.parse(&log);
+		}
+
+		builder.init();
+		trace!("logger initialized");
+		true
+	};
+}
+
+/// Intialize log with default settings
+pub fn init_log() {
+	let _ = *LOG_DUMMY;
+}