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>