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/application-crypto/src/lib.rs

@@ -39,8 +39,6 @@ pub use sp_std::{
 	ops::Deref,
 	vec::Vec,
 };
-#[doc(hidden)]
-pub use max_encoded_len;
 
 pub mod ed25519;
 pub mod sr25519;
@@ -200,9 +198,9 @@ macro_rules! app_crypto_public_full_crypto {
 				$crate::codec::Encode,
 				$crate::codec::Decode,
 				$crate::RuntimeDebug,
-				$crate::max_encoded_len::MaxEncodedLen,
+				$crate::codec::MaxEncodedLen,
 			)]
-			#[max_encoded_len_crate($crate::max_encoded_len)]
+			#[codec(crate = $crate::codec)]
 			pub struct Public($public);
 		}