* contracts: Make use of existing type aliases for runtime API types

* contracts: Refactor the contracts call runtime API

* review: Fix comment typo

Co-authored-by: Andrew Jones <[email protected]>

* Update frame/contracts/common/src/lib.rs

Co-authored-by: Nikolay Volf <[email protected]>

* Update frame/contracts/common/src/lib.rs

Co-authored-by: Nikolay Volf <[email protected]>

* Update frame/contracts/common/src/lib.rs

Co-authored-by: Nikolay Volf <[email protected]>

* Update frame/contracts/common/src/lib.rs

Co-authored-by: Nikolay Volf <[email protected]>

* Update frame/contracts/common/src/lib.rs

Co-authored-by: Nikolay Volf <[email protected]>

* Update lib.rs

* review: Group crate imports

Co-authored-by: Andrew Jones <[email protected]>
Co-authored-by: Addie Wagenknecht <[email protected]>
Co-authored-by: Nikolay Volf <[email protected]>