docs: mention Subcall.getRoflAppId() at appd TX submission #2293
Description
The only way to check tx submission from via ROFL appd REST API was
Subcall.roflEnsureAuthorizedOrigin(roflAppID);
oasisprotocol/sapphire-paratime#606 adds now also
Subcall.getRoflAppId()
Which can be used check tx submission against a whitelist or collect data from different ROFL apps in one contract stored in a mapping
Add the function to the docs and mention the use case for it over the roflEnsureAuthorizedOrigin