Changes to Execute a code snippet.

the endpoint scheme security ApiKeyAuth was added to the API

added the new optional request property user

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 429

added the non-success response with the status 500

added the optional property stderrB64 to the response with the 200 status

added the optional property stdoutB64 to the response with the 200 status

added the optional property user to the response with the 200 status