Fixes #18490

**Bug**
For completion items with no `documentation` but a long `detail` string, we currently do not allow expansion.

**Fix**
Allow expanding the item if it either has a documentation string or has new line characters in its detail string.

* Add CompletionItemKind.Folder

Fixes #17435

Adds a new completion item kind for folder/directories. This is useful for path intellisense

For the icons, I copied the icons for folders into the suggestion icon set. Let me know if new ones are needed instead.

* Fix monaco.d.ts

fixes #12845