Add nightly CI to compare flobject

[mkundu1]

Sample output (from a test CI run):

--- fluent_flobject.py	2022-09-13 17:00:29.000000000 +0000
+++ src/ansys/fluent/core/solver/flobject.py	2022-09-22 07:50:55.709520981 +0000
@@ -[14](https://github.com/pyansys/pyfluent/actions/runs/3103707183/jobs/5027335865#step:6:15)5,7 +145,7 @@
         """Get the requested attribute for the object."""
         attrs = self.get_attrs([attr])
         attrs = attrs.get("attrs", attrs)
Traceback (most recent call last):
-        if attr != "active?" and attrs.get("active?", True) is False:
+        if attr != "active?" and attrs and attrs.get("active?", True) is False:
             raise RuntimeError("Object is not active")
         return attrs[attr] if attrs else None
 
  File "/home/runner/work/pyfluent/pyfluent/.ci/compare_flobject.py", line 31, in <module>
@@ -864,7 +864,7 @@
    compare_flobject()
                     dct["__doc__"] = f"'{pname.strip('_')}' child."
 
         include_child_named_objects = info.get("include_child_named_objects", False)
-        user_creatable = info.get("user_creatable", False)
+        user_creatable = info.get("user_creatable", True)
 
         bases = (base,)
         if include_child_named_objects:

  File "/home/runner/work/pyfluent/pyfluent/.ci/compare_flobject.py", line [27](https://github.com/pyansys/pyfluent/actions/runs/3103707183/jobs/5027335865#step:6:28), in compare_flobject
    raise RuntimeError("flobject.py is different in Fluent and PyFLuent.")
RuntimeError: flobject.py is different in Fluent and PyFLuent.
make: *** [Makefile:58: compare-flobject] Error 1
Error: Process completed with exit code 2.