Distinguish different item types in the completion menu

[failable]

Check for existing issues

• [X] Completed

Describe the feature

Distinguish different item types in the completion menu by different color faces or adding annotations.

Currently, snippet items are displayed like other items. Or in the future, maybe we could complete file paths, words from personal dictionary, etc. If there is a way to distinguish items from different sources, that would be helpful.

(ifm is a snippet.)

If applicable, add mockups / screenshots to help present your vision of the feature

No response

[CharlesChen0823]

add icon for completion is easy, but current Zed team not design relative symbol icons.