Write a code to create external stage pointing to a bucket in s3.
Asked in the Technical round 1 stage. Implement a Python function that generates the Snowflake CREATE STAGE statement from a stage name, an S3 URL, and a storage integration name.
The function receives three strings and returns one SQL string. Quote identifiers with double quotes and escape embedded single quotes in string literals.
s3://def create_external_stage(stage_name, s3_url, storage_integration):