Companion for #11831 (#5784)

* Companion for #11831

* commti

* fix

* fix

* commit

* fix?

* added rpc extension

* fmt

* add dependency

* added NominationPools to runtimes

* implement np

* implement for kusama & westend

* remove np-rpc from rococco

* fmt

* add np-rpc to the client

* fix wrong dependency in client

* remove from client

* remove from rpc

* fix?

* switch back

* fix?

* .

* add rpc extension

* fmt

* fix dependency

* commit

* only implement the api in the runtimes

* update

* update runtimes

* update sp-io

* update

* Update Cargo.toml

* Update Cargo.toml

* Update Cargo.toml

* commit

* Revert "Merge branch 'rpc-pending-rewards' of github.com:Szegoo/polkadot into rpc-pending-rewards"

This reverts commit dd260820641060b6106b238081d674e902267f24, reversing
changes made to 8f3b58dbe28132a95c4d595700214f886da22e5e.

Co-authored-by: kianenigma <[email protected]>