Functioning device manager with renew,revoke, updated model for cert id

services/device_manager/app/models.py

@@ -0,0 +1,27 @@
+import datetime
+
+from pydantic import BaseModel
+
+class DeviceRegistrationRequest(BaseModel):
+    """Request model for registering a new device."""
+
+    name: str
+    location: str | None = None
+
+class DeviceRegistrationResponse(BaseModel):
+    """Response model after registering a new device."""
+
+    certificate_id: str
+    device_id: str
+    ca_certificate_pem: str
+    certificate_pem: str
+    private_key_pem: str
+    expires_at: datetime.datetime
+
+class DeviceResponse(BaseModel):
+    """Response model for device information."""
+
+    id: str
+    name: str
+    location: str | None = None
+    created_at: datetime.datetime