We need a pipeline to compile/lint the merged output of a meeting

There is no current test to check that the merged output of all the CRs still compiles (which would catch e.g. close-but-not-quite duplicate type definitions in multiple CRs).

We should try and add such a test, but not sure how it would work within the CI/CD structure. Is it possible to have an automatically updated branch that we can run the same tests on?