feat: handle contract creation (#43)

* feat: add contract creation handler

* fix: process contract creations

* fix: redis keys name

internal/handler/contract_creation.go

@@ -0,0 +1,28 @@
+package handler
+
+import (
+	"context"
+
+	"github.com/grassrootseconomics/eth-tracker/pkg/event"
+	"github.com/grassrootseconomics/eth-tracker/pkg/router"
+)
+
+const contractCreationEventName = "CONTRACT_CREATION"
+
+func HandleContractCreation() router.ContractCreationHandlerFunc {
+	return func(ctx context.Context, ccp router.ContractCreationPayload, c router.Callback) error {
+		contractCreationEvent := event.Event{
+			Block:           ccp.Block,
+			ContractAddress: ccp.ContractAddress,
+			Success:         ccp.Success,
+			Timestamp:       ccp.Timestamp,
+			TxHash:          ccp.TxHash,
+			TxType:          contractCreationEventName,
+			Payload: map[string]any{
+				"from": ccp.From,
+			},
+		}
+
+		return c(ctx, contractCreationEvent)
+	}
+}