add webhook support for observer (#1546)

skyvern/forge/sdk/schemas/observers.py

@@ -91,5 +91,16 @@ class ObserverMetadata(BaseModel):
 
 class CruiseRequest(BaseModel):
     user_prompt: str
-    url: HttpUrl | None = None
+    url: str | None = None
     browser_session_id: str | None = None
+    webhook_callback_url: str | None = None
+    totp_verification_url: str | None = None
+    totp_identifier: str | None = None
+
+    @field_validator("url", "webhook_callback_url", "totp_verification_url")
+    @classmethod
+    def validate_urls(cls, url: str | None) -> str | None:
+        if url is None:
+            return None
+
+        return validate_url(url)