Setting up repo environments for Somnia deployments

As part of #2343, we added automatic test and prod deployments for Somnia, our Discord bot. This requires some setup of environments on the repo that can be a bit hard to replicate without all the knowledge.

Creating Environments

1. Please create 2 environments: somnia-prod and somnia-test using these instructions, steps 1-4
2. Optionally, set somnia-prod to be restricted to master branch to avoid incidental deployments from a bad workflow file
3. In each environment, create 2 secrets as follows. For real GO, you do not need to generate these secret values, instead you can find them here:
   1. AZURE_CREDENTIALS: These are the credentials we will use to deploy to our Azure Web App. You can get these by generating a Service Principal with Contributor role on the scope of the web app.
      • Instructions: https://learn.microsoft.com/en-us/azure/app-service/deploy-github-actions?tabs=userlevel%2Caspnetcore#set-up-a-github-actions-workflow-manually
      • az ad sp create-for-rbac --name "myApp" --role contributor --scopes /subscriptions/<subscription-id>/resourceGroups/<group-name>/providers/Microsoft.Web/sites/<app-name> --json-auth
      • Set the entire JSON object as the secret value
   2. SOMNIA_CREDENTIALS: These are the credentials of the Discord bot. You can find the template at apps/src/somnia/src/config.empty.json, and you can get these values after creating a Discord application
      • Discord app instructions: https://discord.com/developers/docs/quick-start/getting-started
      • token is the bot token. clientid is the Application ID
      • Set the entire JSON object as the secret value