[16.0][ADD] mis_builder_wizard_export_xlsx: init

[AnizR]

The goal of this pr is to add some options when exporting some MIS reports to xlsx:

• Generate multiple reports as sheets in one xlsx.
• Selecting custom pivot dates for each report.
• Computing one report for multiple companies but having one sheet per company as if we executed multiple times the export.

All of that using a wizard that can be opened using an action on MIS reports:

Note that we might have xlsx that takes a lot of time to be generated (due to the fact that the user selected multiple reports/companies). I advise to use this new module in comination with the great module report_async.