feat: call transcripts api

fix: other small fixes

models/CallTranscripts.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String
+from sqlalchemy import Column, Integer, String, DateTime
 
 
 from database import Base
@@ -9,9 +9,10 @@ class CallTranscripts(Base, CustomBase):
     __tablename__ = "call_transcripts"
 
     id = Column(Integer, primary_key=True, index=True)
-    patient_name = Column(String)
+    patient_name = Column(String, nullable=True)
     patient_number = Column(String)
     call_duration = Column(String)
-    call_received_time = Column(String)
+    call_received_time = Column(DateTime(timezone=True))
     transcript_key_id = Column(String)
+    clinic_id = Column(Integer, nullable=True, default=None)