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/primitives/runtime/src/traits.rs

@@ -26,7 +26,7 @@ use std::str::FromStr;
 #[cfg(feature = "std")]
 use serde::{Serialize, Deserialize, de::DeserializeOwned};
 use sp_core::{self, Hasher, TypeId, RuntimeDebug};
-use crate::codec::{Codec, Encode, Decode};
+use crate::codec::{Codec, Encode, Decode, MaxEncodedLen};
 use crate::transaction_validity::{
 	ValidTransaction, TransactionSource, TransactionValidity, TransactionValidityError,
 	UnknownTransaction,
@@ -40,7 +40,6 @@ pub use sp_arithmetic::traits::{
 use sp_application_crypto::AppKey;
 use impl_trait_for_tuples::impl_for_tuples;
 use crate::DispatchResult;
-use max_encoded_len::MaxEncodedLen;
 
 /// A lazy value.
 pub trait Lazy<T: ?Sized> {