* Add basic authorship metrics

* fixes

* no arc

* move to crate

* Update client/proposer-metrics/Cargo.toml

Co-authored-by: Max Inden <[email protected]>

* remove prefix

* use HistogramTimer

* Update client/proposer-metrics/src/lib.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Update client/proposer-metrics/src/lib.rs

Co-authored-by: Bastian Köcher <[email protected]>

* Update client/proposer-metrics/src/lib.rs

Co-authored-by: Bastian Köcher <[email protected]>

Co-authored-by: Max Inden <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>