Bug/issue 842 (#928)

* fix: apply org-level settings before loading repository configurations

* fix: enhance descriptions and add new properties for security features in settings.json

* fix: update description for deprecated squash-merge commit title property in settings.json

* test: update branch protection tests to handle null restrictions and enforce_admins

* fix: normalize branch protection restrictions and preserve existing settings

* fix: update GitHub API calls to use the correct namespace for branch protection methods

---------

Co-authored-by: Yadhav Jayaraman <57544838+decyjphr@users.noreply.github.com>

Author: madkoo

schema/dereferenced/settings.json

@@ -440,6 +440,15 @@
               "notifications_disabled"
             ]
           },
+          "permission": {
+            "type": "string",
+            "description": "**Closing down notice**. The permission that new repositories will be added to the team with when none is specified.",
+            "enum": [
+              "pull",
+              "push"
+            ],
+            "default": "pull"
+          },
           "parent_team_id": {
             "type": "integer",
             "description": "The ID of a team to set as the parent team."