feat: added patch promocode, promocode stat, user signup/signin, user profile get/patch, user feed

also bug fixes and improvements

solution/api/v1/business/utils.py

@@ -0,0 +1,29 @@
+from api.v1.business import schemas
+from apps.promo.models import Promocode
+
+
+def map_promocode_to_schema(promocode: Promocode) -> schemas.PromocodeViewOut:
+    return schemas.PromocodeViewOut(
+        promo_id=promocode.id,
+        company_id=promocode.business.id,
+        company_name=promocode.business.name,
+        description=promocode.description,
+        image_url=promocode.image_url,
+        target=schemas.PromocodeTargetViewOut(
+            age_from=promocode.target.age_from,
+            age_until=promocode.target.age_until,
+            country=promocode.target.country_raw
+            if promocode.target.country_raw
+            else None,
+            categories=promocode.target.categories,
+        ),
+        max_count=promocode.max_count,
+        active_from=promocode.active_from,
+        active_until=promocode.active_until,
+        mode=promocode.mode,
+        promo_common=promocode.promo_common,
+        promo_unique=promocode.promo_unique,
+        like_count=promocode.like_count,
+        used_count=promocode.used_count,
+        active=promocode.active,
+    )