feat(projects): support members and align rate payloads

apps/projects/services/rates.py

@@ -1,11 +1,11 @@
-from apps.projects.models import ProjectRate, ProjectUserRate
-
-def create_project_rate(project, amount, currency="USD"):
-    return ProjectRate.objects.create(
-        project=project,
-        amount=amount,
-        currency=currency
-    )
+from apps.projects.models import ProjectRate, ProjectUserRate
+
+def create_project_rate(project, hourly_rate, currency="USD"):
+    return ProjectRate.objects.create(
+        project=project,
+        hourly_rate=hourly_rate,
+        currency=currency
+    )
 
 def update_project_rate(rate_instance, **kwargs):
     update_fields = []
@@ -20,13 +20,13 @@ def update_project_rate(rate_instance, **kwargs):
         
     return rate_instance
 
-def create_project_user_rate(project, user, amount, currency="USD"):
-    return ProjectUserRate.objects.create(
-        project=project,
-        user=user,
-        amount=amount,
-        currency=currency
-    )
+def create_project_user_rate(project, user_id, hourly_rate, currency="USD"):
+    return ProjectUserRate.objects.create(
+        project=project,
+        user_id=user_id,
+        hourly_rate=hourly_rate,
+        currency=currency
+    )
 
 def update_project_user_rate(user_rate_instance, **kwargs):
     update_fields = []