Customizing Project, Package, and File Icons

### Description

I am using the Apache NetBeans Language Server Extension for VS Code and noticed that the icons for projects, packages, and files in the “Projects” panel are different from those in the original NetBeans IDE. I would like to use the same amazing icons from NetBeans IDE in VS Code.

Could you please provide information about where the icons for projects, packages, and files are defined in the extension? Is it possible to customize or replace them?

I am interested in contributing a PR to bring the NetBeans IDE icons to the VS Code extension, but I would appreciate guidance on where to find and modify these icons in the codebase.

Thank you for your help!

Extension for VS Code view:

IDE Netbeans view :

### Use case/motivation

_No response_

### Related issues

_No response_

### Are you willing to submit a pull request?

No

No source file, test, or entry point is named in the issue. Start by locating where the VS Code Projects panel defines project, package, and file icons, then compare those definitions with the NetBeans IDE icons. Done would mean the panel uses the requested icons consistently for all three item types.

Written by the indexing model from the issue text.