Refactor orchstr8 to work with supported API calls

[binaryflesh]

orchstr8 uses a deprecated API call. The deprecation warning says: "Application.make_handler(...) is deprecated, use AppRunner API instead." orchstr8 should be refactored to either conform to aiohttp's newer features or use asyncio/socket protocol factories: https://github.com/lbryio/torba/blob/master/torba/orchstr8/service.py#L43