ref(config): Move GitHub config over to config.yml (#697)

Follow up to getsentry/sentry#21041

Author: BYK

sentry/config.example.yml

@@ -76,6 +76,7 @@ transaction-events.force-disable-internal-project: true
 # GitHub Integration #
 ######################
 
+# github-app.extended-permissions: ['repo']
 # github-app.id: GITHUB_APP_ID
 # github-app.name: 'GITHUB_APP_NAME'
 # github-app.webhook-secret: 'GITHUB_WEBHOOK_SECRET' # Use only if configured in GitHub

sentry/sentry.conf.example.py

@@ -257,12 +257,6 @@ def get_internal_network():
     }
 )
 
-######################
-# GitHub Integration #
-######################
-
-GITHUB_EXTENDED_PERMISSIONS = ["repo"]
-
 #########################
 # Bitbucket Integration #
 ########################