* initialised basic structure for the performance contract
* shared code for contract testing
* unified common testing methods between performance and nym pool contracts
* impl of ExecuteMsg for the contract
* impl of QueryMsg for the contract
* setting initial authorised NMs during instantiation
* additional tests and fixes
* ibid
* scaffolding for client traits
* completed client traits
* clippy
* naive add performance contract to testnet manager
* placeholder values for the performance contract address
* introduced admin messages to purge old measurements from the storage
* introduced check ensuring performance data is only added to bonded nodes
Jędrzej Stuczyński