Make every stream-able (#2120)

* Make every stream-able

* Make each over ranges stream-able

crates/nu-cli/tests/commands/echo.rs

@@ -0,0 +1,13 @@
+use nu_test_support::{nu, pipeline};
+
+#[test]
+fn echo_range_is_lazy() {
+    let actual = nu!(
+        cwd: "tests/fixtures/formats", pipeline(
+        r#"
+        echo 1..10000000000 | first 3 | echo $it | to json
+        "#
+    ));
+
+    assert_eq!(actual.out, "[1,2,3]");
+}