Separate sys module into ion_sys workspace member

1 job for fix-783 in 2 minutes and 47 seconds
Status Job ID Name Coverage
  Test
failed #312
nightly

00:02:47

 
Name Stage Failure
failed
nightly Test
   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate

error: aborting due to previous error

For more information about this error, try `rustc --explain E0463`.
error: Could not compile `ion-shell`.

To learn more, run the command again with --verbose.
ERROR: Job failed: exit code 1