* 11670: Add optional weight to DeviceType import
This is 1 of 2 commits to address issue #11670
To maintain consistency, the import design of the DeviceType weight follows the
same pattern used for importing weight and weight units in DCIM Racks.
* Closes#11670: Add weight to ModuleType import
This is commit 2 of 2 to address and close#11670.
To maintain consistency, the import design of the ModuleType weight follows the
same pattern used for importing weight and weight units in DCIM Racks.
* Merge tests; misc cleanup
---------
Co-authored-by: jeremystretch <jstretch@netboxlabs.com>