contracts: Refactor the runtime API in order to simplify node integration (#7409)

* 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 <ascjones@gmail.com>

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

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

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

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

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

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

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

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

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

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

* Update lib.rs

* review: Group crate imports

Co-authored-by: Andrew Jones <ascjones@gmail.com>
Co-authored-by: Addie Wagenknecht <addie@nortd.com>
Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

substrate/Cargo.lock

@@ -4438,7 +4438,6 @@ name = "pallet-contracts"
 version = "2.0.0"
 dependencies = [
  "assert_matches",
- "bitflags",
  "frame-benchmarking",
  "frame-support",
  "frame-system",
@@ -4466,6 +4465,7 @@ dependencies = [
 name = "pallet-contracts-primitives"
 version = "2.0.0"
 dependencies = [
+ "bitflags",
  "parity-scale-codec",
  "sp-runtime",
  "sp-std",