Hi Team,
I want to create a custom Quiz plugin app with PHP and Reacts. I have checked the DOC's but there is not any right process to create the custom app.

Here is my requirements:
Basic Canvas LTI Plugin Needed

Phase 1: Basic plugin set up in my Canvas account using PHP and React (on my server) which displays some content from the React app in Canvas.

Phase 2: Add question and answer functionality so that the canvas course creator can specify a question (eg. 'what is 2+2') and answer ('4'), send that to the plugin, and then the plugin displays the questions, answer box and submit button, and sends back to canvas whether the user got it right or wrong.

Can you please provide me a correct DOC so I can start creating the app?

I have also not found the Developer Key, Consumer Key and secret from my account.
I have followed this DOC instructions but I have not seen any options in my account: https://community.canvaslms.com/t5/Canvas-Badges-Credentials/How-do-I-install-the-Canvas-Credentials...

Please revert me back on this as soon as possible so I can start working on the App.

Thanks.