Differentiate Java filetype icons by shape, instead of just colour

[sgoudham]

Type

• [X] File icon
• [ ] Folder icon

Context and associations

It'd be great to add more Java filetype icons and rework the existing ones to be differentiated by shape and colour, instead of just colour.

Different icons should exist for the following filetypes:

• Class
• Abstract Class (This should be a "hollow" version of the Class icon)
• Sealed Class (Unsure, open to ideas)
• Final Class (This could be the Class icon with a padlock icon displayed on top)
• Interface
• Annotation
• Record
• Enum

References

These are the default icons provided by Intellij:

These icons are from a popular icon pack -> Atom Material Icons:

Inspiration can be taken from both sets, I'd lean towards the Intellij defaults but happy with whatever design we end up that differentiates Classes, Interfaces, Abstract Classes, Records, Enums, Annotations, etc by shape and colour.