Added Dynamic Colour Scaling

[Vincenzo-Verma]

FIxes #76

Dynamic Color Scaling

The GeoPlot visualizer now supports dynamic color scaling for better visual appeal and quantitative analysis. The following features have been added:

1. Automatic Color Scaling: The color gradient scale is automatically adjusted based on the minimum and maximum values of the property being visualized.

2. Manual Color Scaling: Users can optionally specify a manual color scale by providing a manual_color_scale parameter in the options. This parameter should be a tuple (min_value, max_value).

Example Usage

from agent_torch.visualize import GeoPlot

# create a visualizer
geoplot = GeoPlot(config, {
    "cesium_token": "...",
    "step_time": 3600,
    "coordinates": "agents/consumers/coordinates",
    "feature": "agents/consumers/money_spent",
    "visualization_type": "color",
    "manual_color_scale": (0, 1000),  # Optional manual color scale
})

# visualize in the runner-loop
for i in range(0, num_episodes):
    runner.step(num_steps_per_episode)
    geoplot.render(runner.state_trajectory)