src/vs/workbench/contrib/notebook/browser/services/notebookKeymapServiceImpl.ts/isNotebookKeymapExtension
export function isNotebookKeymapExtension(extension: IExtensionStatus): boolean {
	if (extension.local.manifest.extensionPack) {
		return false;
	}

	const keywords = extension.local.manifest.keywords;
	if (!keywords) {
		return false;
	}

	return keywords.indexOf('notebook-keymap') !== -1;
}