Generate storage info for pallet authority_discovery (#9428)

* Migrate Aura pallet to BoundedVec

Implementing issue #8629

* Fixed aura tests after BoundedVec change

* Moved Vec to BoundedVec in authority-discovery

* Merging into the main branch

* Added MaxEncodedLen to crypto

Need this without full_crypto to be able to add generate_store_info

* Add generate_store_info for aura

* Adding changes to Slot to add MaxEncodedLen

* Adding generate_store_info to authority discovery

* fmt

* removing panics in runtime if vec size too large

* authority-discovery: Remove panics in runtime
Can happen if vec size is too large, so truncate the vec in that case

* Adding logging when I truncate Vecs

* Got the sign the other way around

* Reverting pallet_aura changes
This is already being addressed by PR #9371

* Change BoundedVec to WeakBoundedVec

More robust implementation following @thiolliere recommendation.

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/primitives/consensus/slots/src/lib.rs

@@ -19,10 +19,10 @@
 
 #![cfg_attr(not(feature = "std"), no_std)]
 
-use codec::{Decode, Encode};
+use codec::{Decode, Encode, MaxEncodedLen};
 
 /// Unit type wrapper that represents a slot.
-#[derive(Debug, Encode, Decode, Eq, Clone, Copy, Default, Ord)]
+#[derive(Debug, Encode, MaxEncodedLen, Decode, Eq, Clone, Copy, Default, Ord)]
 pub struct Slot(u64);
 
 impl core::ops::Deref for Slot {