Add option for tags on import (#377)

* Add option for tags on import and backup

changedetectionio/tests/test_import.py

@@ -0,0 +1,28 @@
+#!/usr/bin/python3
+
+import time
+
+from flask import url_for
+
+from .util import live_server_setup
+
+
+def test_import(client, live_server):
+
+    live_server_setup(live_server)
+
+    # Give the endpoint time to spin up
+    time.sleep(1)
+
+    res = client.post(
+        url_for("import_page"),
+        data={
+            "urls": """https://example.com
+https://example.com tag1
+https://example.com tag1, other tag"""
+        },
+        follow_redirects=True,
+    )
+    assert b"3 Imported" in res.data
+    assert b"tag1" in res.data
+    assert b"other tag" in res.data