refactor: add saved address to new backend

status/statusgo_backend_new/saved_addresses.nim

@@ -0,0 +1,16 @@
+import json
+import ./core, ./response_type
+
+export response_type
+
+proc addSavedAddress*(name, address: string): RpcResponse[JsonNode] {.raises: [Exception].} =
+  let payload = %* [{"name": name, "address": address}]
+  return callPrivateRPC("wallet_addSavedAddress", payload)
+
+proc deleteSavedAddress*(address: string): RpcResponse[JsonNode] {.raises: [Exception].} =
+  let payload = %* [address]
+  return callPrivateRPC("wallet_deleteSavedAddress", payload)
+
+proc getSavedAddresses*(): RpcResponse[JsonNode] {.raises: [Exception].} =
+  let payload = %* []
+  return callPrivateRPC("wallet_getSavedAddresses", payload)