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/parachains/runtimes/contracts/contracts-rococo/src/constants.rs

@@ -76,7 +76,7 @@ pub mod fee {
 		type Balance = Balance;
 		fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {
 			// in Kusama, extrinsic base weight (smallest non-zero weight) is mapped to 1/10 CENT:
-			// in Statemine, we map to 1/10 of that, or 1/100 CENT
+			// in Rococo Contracts, we map to 1/10 of that, or 1/100 CENT
 			let p = super::currency::CENTS;
 			let q = 100 * Balance::from(ExtrinsicBaseWeight::get().ref_time());