odoo/o-spreadsheet#4693

Created by BI, Hendrickx Anthony (anhe)

Blocked

label
odoo:master-chart-add_heatmap-anhe
head
3c594da286705e691ddcf4eda96eec7db60e3249
odoo/o-spreadsheet
master #4693 missing r+

[WIP] some BI features

WIP1 - Add heatmap as new chart