Whenever I want to add any authorized redirect URI in the credentials section, I must have to google console and add it. Is there any API available that I can use in the script, I have googled it a lot but couldn't find anything related to it.
There is no api that will allow you to programmatically add redirect uris to your project on google console.
Google console is configuration for the developer its not something that should be needed to be done programmatically.