ci: run build of consumer front-ends

To avoid regressions such as #341, we could run the CI against the front-ends that consume UI as part of the PR checks to ensure that new versions cannot break the API. We could pull the latest of e.g. player, builder and library, replace the dependency to point it to the edge branch version (sha) et see if they build. This may cause issues however if we expect to create breaking changes, in which we already know that the consumers should be changed as well.