feat: ability to customize action button color

[gugupy]

Description

To customize the button color when the single parameter is True, you can assign the btn_class value based on the intended action.

@action("delete", "Delete", "Delete all Really?", "fa-rocket", btn_class="btn-danger")
def muldelete(self, items):
    if isinstance(items, list):
        self.datamodel.delete_all(items)
        self.update_redirect()
    else:
        self.datamodel.delete(items)
            return redirect(self.get_redirect())

The btn_class parameter is explicitly set to btn-danger to reflect the critical nature of the Delete action, ensuring the button visually communicates its purpose effectively.

ADDITIONAL INFORMATION

• Has associated issue:
• Is CRUD MVC related.
• Is Auth, RBAC security related.
• Changes the security db schema.
• Introduces new feature
• Removes existing feature

[Yoyasp]

Looks like a great option to have! Also nice to still let it have the default primary color.