Add Comment DTO

dto/comment.py

@@ -0,0 +1,16 @@
+class Comment:
+    def __init__(self,
+                 id: str,
+                 post_id: str,
+                 author: str,
+                 content: str,
+                 timestamp: float,
+                 reply_to: str,
+                 source: str):
+        self.id = id
+        self.post_id = post_id
+        self.author = author
+        self.content = content
+        self.timestamp = timestamp
+        self.reply_to = reply_to
+        self.source = source