feature: add vrf smoke superscript (#10739)

* feature: add vrf smoke superscript

Add a new superscript that will deploy the VRF universe and run a single
request and fulfillment from a new VRF key that is generated afresh with
each run of the superscript. This is useful to test out new chains and
whether they're usable for VRF.

* feature: add bhs smoke

core/scripts/common/helpers.go

@@ -214,6 +214,11 @@ func explorerLinkPrefix(chainID int64) (prefix string) {
 	case 1666700000, 1666700001, 1666700002, 1666700003: // Harmony testnet
 		prefix = "https://explorer.testnet.harmony.one"
 
+	case 84531:
+		prefix = "https://goerli.basescan.org"
+	case 8453:
+		prefix = "https://basescan.org"
+
 	default: // Unknown chain, return prefix as-is
 		prefix = ""
 	}
@@ -410,7 +415,7 @@ func BinarySearch(top, bottom *big.Int, test func(amount *big.Int) bool) *big.In
 	return bottom
 }
 
-// Get RLP encoded headers of a list of block numbers
+// GetRlpHeaders gets RLP encoded headers of a list of block numbers
 // Makes RPC network call eth_getBlockByNumber to blockchain RPC node
 // to fetch header info
 func GetRlpHeaders(env Environment, blockNumbers []*big.Int, getParentBlocks bool) (headers [][]byte, hashes []string, err error) {

core/scripts/vrfv2plus/testnet/main.go

@@ -6,12 +6,13 @@ import (
 	"encoding/hex"
 	"flag"
 	"fmt"
-	"github.com/smartcontractkit/chainlink/v2/core/gethwrappers/generated/vrf_v2plus_load_test_with_metrics"
 	"log"
 	"math/big"
 	"os"
 	"strings"
 
+	"github.com/smartcontractkit/chainlink/v2/core/gethwrappers/generated/vrf_v2plus_load_test_with_metrics"
+
 	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/ethereum/go-ethereum/common"
@@ -46,12 +47,17 @@ import (
 
 var (
 	batchCoordinatorV2PlusABI = evmtypes.MustGetABI(batch_vrf_coordinator_v2plus.BatchVRFCoordinatorV2PlusABI)
+	coordinatorV2PlusABI      = evmtypes.MustGetABI(vrf_coordinator_v2plus.VRFCoordinatorV2PlusABI)
 )
 
 func main() {
 	e := helpers.SetupEnv(false)
 
 	switch os.Args[1] {
+	case "smoke":
+		smokeTestVRF(e)
+	case "smoke-bhs":
+		smokeTestBHS(e)
 	case "manual-fulfill":
 		cmd := flag.NewFlagSet("manual-fulfill", flag.ExitOnError)
 		// In order to get the tx data for a fulfillment transaction, you can grep the