RIght now there’s no official support for Terrascan. Support could manifest itself in three ways:
Our analyzer formally supports Terrascan. My understanding is that’s not currently on our roadmap. I’m happy to move your thread to Suggest new features - SonarSource Community if you’d like.
Importing issues as Generic Issues – I think you’ve made the right decision to raise an issue on the repo about a formatter that supports this format.