feat: move Azure config to installation_config (#9481)

This PR has the following changes

1. Add `AZURE_APP_ID` and `AZURE_APP_SECRET` to installation config
2. Add Microsoft config to `super_admin/features.yml`
3. Replace usage of `ENV.fetch` with `GlobalConfigService.load` for
fetch App ID and Secret

app/controllers/microsoft_controller.rb

@@ -12,6 +12,6 @@ class MicrosoftController < ApplicationController
   end
 
   def microsoft_indentity
-    @identity_json = ENV.fetch('AZURE_APP_ID', nil)
+    @identity_json = GlobalConfigService.load('AZURE_APP_ID', nil)
   end
 end