Problem/Motivation
Shortcut module has some forms in \Drupal\shortcut\Form and some in \Drupal\shortcut directly. Other modules do this where they have entity forms in the module namespace directly and other forms in the Form namespace (which is already confusing IMO). But Shortcut is worse because it has both mixed up in both places.
Proposed resolution
Move all Forms to the Form sub-namespace.
Remaining tasks
User interface changes
None.
API changes
Forms are in a different namespace.