Is it good practice to declare GCP application authorization credentials, i.e. Client ID and Client Secret in plain text?

I've been working on a Windows desktop app with C#, which involves uploading a file to Google Drive. My real concern is that when I've got to publish the app, the *application's* Client ID/Client Secret shall be disclosed, as I've stored them as variables in the app. Is it safe? Or is there any other, better way to store them in your app while authorizing it with GCP?