Util: Fix circular import by moving get_form() to the dataforms module

2 jobs for booleans in 5 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
failed #16531
run-test

00:00:05

 
  Build
skipped #16532
run-build
 
Name Stage Failure
failed
run-test Test
    from nbxmpp.util import from_xs_boolean
ImportError: cannot import name 'from_xs_boolean' from partially initialized module 'nbxmpp.util' (most likely due to a circular import) (/home/gitlab-runner/builds/c0eaa480/0/linkmauve/python-nbxmpp/nbxmpp/util.py)


----------------------------------------------------------------------
Ran 20 tests in 0.007s

FAILED (errors=12)
ERROR: Job failed: exit status 1