Feature Request: Sorting for Row Total Columns and Download Option in Table Widget

[UmakanthKaspa]

Summary:
Enhance the table widget in Frappe Insights with the following features:

1. Sorting for Row Total Columns: Enable sorting specifically for columns that display row totals.
2. Download Option for Table Data: Add a feature to download table data in CSV or Excel format.

Use Case:
Currently, while sorting is available for other columns in the table widget, it does not extend to row total columns. Additionally, there is no direct way to download table data for further analysis. These enhancements will make the table widget more comprehensive and user-friendly.