Add marshmallow dataclass dependency

Signed-off-by: cwasicki <[email protected]>

Author: cwasicki

pyproject.toml

@@ -35,6 +35,7 @@ dependencies = [
   "pvlib >= 0.13.0, < 0.14.0",
   "python-dotenv >= 0.21.0, < 1.2.0",
   "toml >= 0.10.2, < 0.11.0",
+  "marshmallow_dataclass >= 8.7.1, < 9",
   "plotly >= 6.0.0, < 6.4.0",
   "kaleido >= 0.2.1, < 1.2.0",
   "frequenz-client-reporting >= 0.19.0, < 0.20.0",