Drop with iter range (#4242)

* Allow range in 'drop nth'

* Unit tests for drop nth range

* Add range case to the description

* Fix description 2

* format fixes

* Fix example and some refactoring

* clippy fixes

crates/nu-command/tests/commands/drop.rs

@@ -66,3 +66,25 @@ fn more_rows_than_table_has() {
 
     assert_eq!(actual.out, "0");
 }
+
+#[test]
+fn nth_range_inclusive() {
+    let actual = nu!(cwd: ".", "echo 10..15 | drop nth (2..3) | to json");
+
+    assert_eq!(actual.out, "[10,11,14,15]");
+}
+
+#[test]
+fn nth_range_exclusive() {
+    let actual = nu!(cwd: ".", "echo 10..15 | drop nth (1..<3) | to json");
+
+    assert_eq!(actual.out, "[10,13,14,15]");
+}
+
+#[test]
+fn nth_missing_first_argument() {
+    let actual = nu!(cwd: ".", "echo 10..15 | drop nth \"\"");
+
+    assert!(actual.err.contains("Expected int or range"));
+    assert!(actual.err.contains("found string"));
+}