[Kit Redesign] Phase 1 - Change itemizable source

[zeeshan-haidar]

Resolves #3707

Description

Just created the draft PR to get pulse checked to see if I am in the right direction with my approach

Type of change

• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Screenshots

[jimmyli97]

In case anyone is looking at this in the future, only commits you need to look at are the last 6 (b822b57 onwards)

• Commits before f3fb846 - 256dcf3 were merged in #3641
• 595b96f - e972029 were merged in #3678
• df1410e - c298036 were merged in #3641