revng.support.artifacts
Remove a few `Artifact` classes from `revng.support.artifact`. These were needed to handle the idiosyncrasies of the legacy pipeline. Some of the logic has been reworked into the ptml code.
Convert `revng.project` to use the `revng2` command-line and the `revng project daemon` server instead of the legacy ones.
Readme and pyproject for revng and revng_internal to the projects folders. Updated CMakeLists.txt so we can specify the README and pyproject paths.
Giacomo Vercesi