Experiment using swc instead of tsc (as we did the switch on
twenty-front)
It's **much** faster (at least 5x) but has stricter requirements.
I fixed the build but there's still an error while starting the server,
opening this PR for discussion.
Checkout the branch and try `nx build:swc twenty-server`
Read: https://docs.nestjs.com/recipes/swc#common-pitfalls
