Country inference

mc.api.infer_record_country([
    {"record_id": "1", "emails": ["test@example.com"]}
])

result = mc.api.infer_record_country([{"record_id": "1", "emails": ["test@example.com"]}])
# {
#   "results": [
#     {"record_id": "1", "inferred_country": "US", "confidence": ...}
#   ]
# }