Add weather.db to .gitignore and remove from tracking

Co-authored-by: CodersAcademy006 <104912634+CodersAcademy006@users.noreply.github.com>

Author: Copilot

.gitignore

@@ -50,3 +50,7 @@ data/
 htmlcov/
 .coverage
 .pytest_cache/
+
+# Database files (generated)
+*.db
+weather.db