Rename Statemint to Asset Hub (#2633)

* change dir names

* cargo toml updates

* fix crate imports for build

* change chain spec names and PR review rule

* update cli to accept asset-hub

* find/replace benchmark commands

* integration tests

* bridges docs

* more integration tests

* AuraId

* other statemint tidying

* rename statemint mod

* chain spec mod

* rename e2e test dirs

* one more Runtime::Statemine

* benchmark westmint

* rename chain spec name and id

* rename chain spec files

* more tidying in scripts/docs/tests

* rename old dir if exists

* Force people to manually do the move.

(Safer as there could be additional considerations with their setup)

* review touchups

* more renaming

* Update polkadot-parachain/src/command.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* better error message

* do not break on-chain spec_name

* log info message that path has been renamed

* better penpal docs

---------

Co-authored-by: gilescope <gilescope@gmail.com>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: parity-processbot <>

cumulus/polkadot-parachain/tests/benchmark_storage_works.rs

@@ -8,7 +8,7 @@ use std::{
 use tempfile::tempdir;
 
 /// The runtimes that this command supports.
-static RUNTIMES: [&str; 3] = ["westmint", "statemine", "statemint"];
+static RUNTIMES: [&str; 3] = ["asset-hub-westend", "asset-hub-kusama", "asset-hub-polkadot"];
 
 /// The `benchmark storage` command works for the dev runtimes.
 #[test]