vscode support iconPath in QuickPickItem

[rschnekenbu]

What it does

Support of iconPathc in QuickPickItem
VS Code 1.81 finalized the support for the iconPath in QuickPickItem. This is a partial support: full API support and the display of the ThemeIcon, but the display of the URI based icons is not yet available. This last part requires an update in monaco editor core

Fixes eclipse-theia#12883

Contributed on behalf of ST Microelectronics

How to test

1. Install following extension:

• extension:
  quickinput-sample-0.0.1.zip
• source:
  quickinput-sample-0.0.1-src.zip

2. The extension provides a set of quick input samples. To test the new API, the following commands shall be used

• Open the command palette
• Select Quick Input Samples
• Select Show QuickPick
• 4 items shall be displayed, and only the 4th has an icon (Theme Icon is supported). The first and second should also get some icons, but this is not yet supported (requires a monaco-editor-core update so the monaco QuickPickItem will also have support for iconPath ).
  

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• As a reviewer, I agree to behave in accordance with the review guidelines

[rschnekenbu]

53a45b4 fixes lint errors

[rschnekenbu]

closed in favor of eclipse-theia#12945