Create benchmark for the system::set_code instrisic (#13373)

* Still WIP

# Conflicts:
#	frame/system/src/weights.rs

* Still WIP

* Add benchmark for system::set_code intrinsic

fixes #13192

* Fix format

* Add missing benchmark runtime

* Fix lint warning

* Consume the rest of the block and add test verification after the benchmark

* Rewrite set_code function

* Try to fix benchmarks and tests

* Remove weight tags

* Update frame/system/src/tests.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* Register ReadRuntimeVersionExt for benches

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Fix tests

* Fix deprecations

* Fix deprecations

* ".git/.scripts/commands/bench/bench.sh" pallet dev frame_system

* Add update info and remove obsolete complexity comments.

* ".git/.scripts/commands/fmt/fmt.sh"

* Update frame/system/src/lib.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* Update frame/system/src/lib.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* Update frame/system/src/lib.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* Update frame/system/src/lib.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* Update frame/system/benchmarking/src/lib.rs

Co-authored-by: Bastian Köcher <git@kchr.de>

* ".git/.scripts/commands/fmt/fmt.sh"

* Update README.md

Just trigger CI rebuild

* Update README.md

Trigger CI

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: command-bot <>

substrate/frame/system/benchmarking/Cargo.toml

@@ -24,6 +24,8 @@ sp-std = { version = "5.0.0", default-features = false, path = "../../../primiti
 
 [dev-dependencies]
 sp-io = { version = "7.0.0", path = "../../../primitives/io" }
+sp-externalities = { version = "0.13.0", path = "../../../primitives/externalities" }
+sp-version = { version = "5.0.0", path = "../../../primitives/version" }
 
 [features]
 default = ["std"]