support config the exclude files patterns to disable preview

[tjx666]

Clear and concise description of the problem

I generate the icon types in icons.d.ts which include many icons about 3500 icons.

When I open the file, vscode crash and no respond.

Suggested solution

support config files to disable preview.

{
    "iconify.preview.exclude": ["**/typings/icon.d.ts"]
}

Alternative

No response

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the Contributing Guide.
• [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[antfu]

Sure, pr welcome!

[tjx666]

@antfu pr ready, take a look please.