refactor: add superstruct and validate request/response utils

[stanleyyconsensys]

This PR is to add superstruct into the starknet snap, and include a common custom defined struct AddressStruct as an demo

• AddressStruct process the same logic as validateAndParseAddress in starknet utils

This PR also adding a RPC validator util for future use to validate the request & response with superstruct
possible use case:

sendTransaction(requestParams) {
     validateRequest(requestParams, struct)
     // process logic
     validateResponse(response, struct)
    return response
}

[sonarqubecloud]

Quality Gate passed for 'consensys_starknet-snap-wallet-ui'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate passed for 'consensys_starknet-snap-starknet-snap'

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud