Improve EOSdash.

Make EOSdash use UI components from MonsterUI to ease further development.

- Add a first menu with some dummy pages and the configuration page.
- Make the configuration scrollable.
- Add markdown component that uses markdown-it-py (same as used by
  the myth-parser for documentation generation).
- Add bokeh (https://docs.bokeh.org/) component for charts
- Added several prediction charts to demo
- Add a footer that displays connection status with EOS server
- Add logo and favicon

Update EOS server:

- Move error message generation to extra module
- Use redirect instead of proxy

Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

src/akkudoktoreos/server/dash/hello.py

@@ -0,0 +1,24 @@
+from typing import Any
+
+from fasthtml.common import Div
+
+from akkudoktoreos.server.dash.markdown import Markdown
+
+hello_md = """![Logo](/eosdash/assets/logo.png)
+
+# Akkudoktor EOSdash
+
+The dashboard for Akkudoktor EOS.
+
+EOS provides a comprehensive solution for simulating and optimizing an energy system based
+on renewable energy sources. With a focus on photovoltaic (PV) systems, battery storage (batteries),
+load management (consumer requirements), heat pumps, electric vehicles, and consideration of
+electricity price data, this system enables forecasting and optimization of energy flow and costs
+over a specified period.
+
+Documentation can be found at [Akkudoktor-EOS](https://akkudoktor-eos.readthedocs.io/en/latest/).
+"""
+
+
+def Hello(**kwargs: Any) -> Div:
+    return Markdown(hello_md, **kwargs)