chore: reorg codegen logic and add test gobindings#950

graham-chainlink merged 2 commits intomainsmartcontractkit/chainlink-deployments-framework:mainfrom

chore/add-testdata-go-bindings-and-split-ops-codegensmartcontractkit/chainlink-deployments-framework:chore/add-testdata-go-bindings-and-split-ops-codegenCopy head branch name to clipboard