Allow the calculation of bytes and int. (#2160)

* Allow the calculation of bytes and int.

* fix clippy.

* minimal implement the into_into command.

* Revert "fix clippy."

This reverts commit 0d7cf72ed2.

* Revert "Allow the calculation of bytes and int."

This reverts commit 9c4e3787f5.

* set the argument to any type.

* if the argument is an int, return it with no change in value.

* add tests for into-int command.

* fix a faild test.

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

@@ -21,6 +21,7 @@ mod group_by;
 mod headers;
 mod histogram;
 mod insert;
+mod into_int;
 mod is_empty;
 mod keep;
 mod last;