Our tests suite should automatically run all demos in every available language in CI 1. Asset that it doesn't crash 2. Assert that [no error](https://github.com/sonnyp/Workbench/commit/c4c16d02a6a5e066b1c64852c370dba4a3f13800) or [warning](https://github.com/sonnyp/Workbench/issues/402) We'll need some kind of “headless” mode for Workbench execution env. This should run on Git workflows and `make ci`
