Contracts: Update Config::Debug (#14789)

* Update Debug trait

* Rename

* tweak

* fmt

* Better namings

* rm unsafe-debug

* rework doc

* nit

* fix comment

* clippy

* update naming

* Rename file

* fmt fixes

* rename

* Move tracing behind umbrella Debugging trait

* fix

* fix comment

* reorder imports

* comment

* update doc

* add missing doc

* add missing doc

* Update Debugging -> Debugger

* Update bin/node/runtime/Cargo.toml

substrate/bin/node/runtime/Cargo.toml

@@ -373,4 +373,3 @@ try-runtime = [
 	"pallet-whitelist/try-runtime",
 	"sp-runtime/try-runtime",
 ]
-unsafe-debug = [ "pallet-contracts/unsafe-debug" ]