Investigate replacing json cleaning scripts with jq or awk commands

[JuanCoRo]

The JSON produced by the stateDiff modifier is escaped (particularly, the one produced in test/kontrol/KontrolDeployment.sol). Before feeding that JSON to Kontrol, we unescape it with the script test/kontrol/scripts/json/clean_json.py. We also reverse the deployments/hardhat/.deployment JSON with test/kontrol/scripts/json/reverse_key_values.py.

To stick to Optimism's toolchain and reduce the amount of code to maintain, we could investigate how to reproduce the functionalities of these scripts with a tool like jq or awk.