Remove in-tree max-encoded-len and use the new SCALE codec crate instead (#9163)

* Update impl-codec to use new upstream MaxEncodedLen trait

* Adapt crates to use the updated codec crate for `MaxEncodedLen`

* Remove max-encoded-len crate altogether

* Fix test compilation in `pallet-proxy`

* reorganize import (#9186)

* Fix remaining `MaxEncodedLen` imports

* Fix remaining old usages of max-encoded-len crate

* Fix UI test

* Manually depend on new impl-codec to fix Polkadot companion build

* Use newly released primitive-types v0.9.1 that has new codec impls

* Make sure codec deps are up-to-date in crates that use them

Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>

substrate/bin/node/runtime/src/lib.rs

@@ -33,7 +33,7 @@ use frame_support::{
 	},
 	traits::{
 		Currency, Imbalance, KeyOwnerProofSystem, OnUnbalanced, LockIdentifier,
-		U128CurrencyToVote, MaxEncodedLen,
+		U128CurrencyToVote,
 	},
 };
 use frame_system::{
@@ -41,7 +41,7 @@ use frame_system::{
 	limits::{BlockWeights, BlockLength}
 };
 use frame_support::{traits::InstanceFilter, PalletId};
-use codec::{Encode, Decode};
+use codec::{Encode, Decode, MaxEncodedLen};
 use sp_core::{
 	crypto::KeyTypeId,
 	u32_trait::{_1, _2, _3, _4, _5},