✨ Feat: [#72] 깃허브 관련 기능 구현 완료

users/permissions.py

@@ -0,0 +1,11 @@
+# permissions.py
+from rest_framework.permissions import BasePermission
+
+class IsGithubLinked(BasePermission):
+    def has_permission(self, request, view):
+        user = request.user
+
+        if token_obj := getattr(user, 'github_token', None):
+            if token := getattr(token_obj, 'access_token', None):
+                return True
+        return False