* store block number ++ state root in parachains pallet

* fixed parachains finality APIs

* (test commit)

* removed test code

* deduplicated code a bit

* removed commented code

* spelling

* Update modules/parachains/src/lib.rs

Co-authored-by: Adrian Catangiu <[email protected]>

* Update modules/parachains/src/lib.rs

Co-authored-by: Adrian Catangiu <[email protected]>

* Update modules/parachains/src/mock.rs

Co-authored-by: Adrian Catangiu <[email protected]>

* added comment

Co-authored-by: Adrian Catangiu <[email protected]>

* draft: remove without_storage_info for messages pallet

* some cleanup

* added parachains pallet benchmarks

* deduplicate insertion of bridged header

* pruning weight

* fixes

* fix compilation

* parachains finality

* parachains pallet test

* demo of how to configure GRANDPA pallet instance

* allow instances in parachains pallet

* spellcheck

* TODO + fix

* fmt

* removed invalid storage_keys file

* change all hashers to Blake2_128Concat

* use Twox64Concat for insertion position

* fix build

* fix compilation

* change ParaId and ParaHead types

* TODOs -> TODOs with issues refs