Implementing Categories for Notes

[mala-eficode]

Description:

• As a user,
• I want to have a field for categories in the items,
• So that I can categorize the notes.

Acceptance Criteria:

1. Category Field:

   • Each item should have a category field.
   • The category field should be a dropdown list with predefined categories - 'Home', 'Personal' and 'Work.

2. Displaying:

   • The notes should have the new field displayed while creating new notes, editing and in the main page

3. Testing:

   • Write unit tests to verify that items can be created and edited with a category.