Added tune previews

scripts/03_add_preview_url.py

@@ -0,0 +1,8 @@
+from folkugat_web.dal.sql import get_connection
+
+with get_connection() as con:
+    cur = con.cursor()
+    alter_query = """ ALTER TABLE tema_scores ADD COLUMN preview_url TEXT"""
+    _ = cur.execute(alter_query)
+
+print("DONE!")