Add Facebook Writer API with models, routers, and migration summary

Co-authored-by: ajay.calsoft <ajay.calsoft@gmail.com>

backend/api/facebook_writer/models/__init__.py

@@ -0,0 +1,79 @@
+"""Facebook Writer API Models."""
+
+from .post_models import (
+    FacebookPostRequest,
+    FacebookPostResponse,
+    FacebookPostAnalytics,
+    FacebookPostOptimization
+)
+from .story_models import (
+    FacebookStoryRequest,
+    FacebookStoryResponse
+)
+from .reel_models import (
+    FacebookReelRequest,
+    FacebookReelResponse
+)
+from .carousel_models import (
+    FacebookCarouselRequest,
+    FacebookCarouselResponse
+)
+from .event_models import (
+    FacebookEventRequest,
+    FacebookEventResponse
+)
+from .hashtag_models import (
+    FacebookHashtagRequest,
+    FacebookHashtagResponse
+)
+from .engagement_models import (
+    FacebookEngagementRequest,
+    FacebookEngagementResponse
+)
+from .group_post_models import (
+    FacebookGroupPostRequest,
+    FacebookGroupPostResponse
+)
+from .page_about_models import (
+    FacebookPageAboutRequest,
+    FacebookPageAboutResponse
+)
+from .ad_copy_models import (
+    FacebookAdCopyRequest,
+    FacebookAdCopyResponse
+)
+
+__all__ = [
+    # Post models
+    "FacebookPostRequest",
+    "FacebookPostResponse", 
+    "FacebookPostAnalytics",
+    "FacebookPostOptimization",
+    # Story models
+    "FacebookStoryRequest",
+    "FacebookStoryResponse",
+    # Reel models
+    "FacebookReelRequest", 
+    "FacebookReelResponse",
+    # Carousel models
+    "FacebookCarouselRequest",
+    "FacebookCarouselResponse",
+    # Event models
+    "FacebookEventRequest",
+    "FacebookEventResponse",
+    # Hashtag models
+    "FacebookHashtagRequest",
+    "FacebookHashtagResponse",
+    # Engagement models
+    "FacebookEngagementRequest",
+    "FacebookEngagementResponse",
+    # Group post models
+    "FacebookGroupPostRequest",
+    "FacebookGroupPostResponse",
+    # Page about models
+    "FacebookPageAboutRequest",
+    "FacebookPageAboutResponse",
+    # Ad copy models
+    "FacebookAdCopyRequest",
+    "FacebookAdCopyResponse"
+]