Inspection extension to node CLI (#4697)

* Initial inspect.

* WiP

* Add parsing tests.

* Finalize CLI.

* Update to latest substrate.

* Remove unused imports.

* Support ImportParams as well, to get the right pruning setting.

* Mention in docs that hash is no 0x.

* Move bytes above extrinsics.

* Switch to fill helper from sc_cli.

* Remove overwrite.

* Fix error.

* Fix error message.

* Remove extra allow.

* init_config