Extend the client to iterate over historical weather forecast data.

[david-natingga-frequenz]

Extend the client to iterate over historical weather forecast data.

Add examples to demonstrate:

• How to stream live data with the client based on Christoph's example.
• How to iterate over the historical data with the client.

Example output from the second example:

Timestamp: seconds: 1702940400

feature: FORECAST_FEATURE_V_WIND_COMPONENT_100_METRE
value: 5.11610031

feature: FORECAST_FEATURE_U_WIND_COMPONENT_100_METRE
value: 12.4870567

Timestamp: seconds: 1702944000

feature: FORECAST_FEATURE_V_WIND_COMPONENT_100_METRE
value: 5.08150578

feature: FORECAST_FEATURE_U_WIND_COMPONENT_100_METRE
value: 12.0456848