Add option to hide Preview Data context menu options to ignore some files based on file extensions

[PePoDev]

This extension is awesome!

But I don't want to open the README file automatically with this extension

I think It cloud be better if this extension has an option to add a list of file extensions to ignore and open with the editor by default.

[RandomFractals]

I don't want to open the README file automatically with this extension

Data Preview doesn't overwrite the standard vscode Open Preview menu option for markdown files, or contribute to Open With ... menu options, and simply provides its own custom Preview Data option in the built-in vscode file explorer and editor context menus.