Implement Valadium contracts for use in coordinator · Consensys/linea-monorepo@845c930

Canceling since a higher priority waiting request for linea-sequencer-plugin-testing-main-refs/pull/1782/merge exists

Canceling since a higher priority waiting request for transaction-exclusion-api-testing-main-refs/pull/1782/merge exists

Canceling since a higher priority waiting request for coordinator-testing-main-refs/pull/1782/merge exists