How to store a schema in file and in which file format for databricks autoloader?

Question

I am using databricks autoloader. Here, the table schema will be dynamic for the incoming data. I have to store the schema in some file and read it in autoloader during readStream.

How can I store the schema in a file and in which format?

Whether the file can be read using schema option or "cloudFiles.schemaLocation" option?

spark.readStream.format("cloudFiles").schema("<schema>").option("cloudFiles.schemaLocation", "<path_to_checkpoint>").option("cloudFiles.format", "parquet").load("<path_to_source_data>")