Changes to Create a reconciliation rule

the id response's property type changed from integer to string, and format from no format to uuid for status 201

the reconciliation_id response's property type changed from integer to string, and format from no format to uuid for status 201

added the new optional header request parameter Idempotency-Key

added the new optional request property rollup/tolerance

added the optional property rollup/tolerance to the response with the 201 status