Refresh App IDs on commits to main and store as secrets.

[SamanthaCra]

This is a publc repo so we need to ensure our app EUIs and app keys are stored as secrets. This will mean making new devices on TTN when we have finalised our code and storing those IDs as secrets.

• [x] Create secrets
• [x] Create workflow file
• [x] Verify they update
• [ ] Add the workflow to deploy with docker.

[SamanthaCra]

So far this has been set up with Cron jobs but if we can get the docker container integration working on the app server we may be able to use it to deploy on the Pi too.

[SamanthaCra]

Our main blockers are that the secrets are only used in actions so they wont go into the code unless we use Arduino Cloud.

[SamanthaCra]

I will pick this back up in sprint # 4