Bump xcm-v3 + substrate (#1767)

* Bump xcm-v3 + substrate

* More fixes

* Added `#[pallet::call_index`

* Fixes for MMR (TODO:plese check)

* More call indexes

* Cumulus bump

* Fixes for mmr

* Fixes for weights

* Fixes for xcm

* MMR fixes + cargo fmt

* Fix some rpc errors (bump jsonrpsee version)

* Fix cumulus stuff

* Fixes cumulus

* clippy

* more clipy

* Fix test + unused deps

* PR fixes

* cargo update (bump xcm-v3)

Co-authored-by: Serban Iorga <[email protected]>