[feature]Piechart design improvement

[cfl777]

Hi,

Request is to either change the existing basic pie chart to look more appealing, or create a different type of pie chart option.
To look similar to the pie chart shown here is one option:
https://github.com/PhilJay/MPAndroidChart

The current design is not visually appealing - old and basic.

I would be willing to assist in the development.