[FIX] microsoft_calendar : Apply improvement on 14.0

The goal of this commit is to apply most of the improvement of microsoft calendar on 14.0 to fix different reported issues. The different improvement can be seen in #68700.

One of the major improvement not ported is the change of name for days in the recurrence (2 letters => 3 letters).

This fix is based on opw-2658427 but attempt ot fix issues separated in all the ticked link to this one (see opw-2658427 chatter).

On top of that, the different tests case that were implemented in master were also ported with this fix and more manual test were effectuated.

In addition, we fixed the following issues :
Traceback related to attendee without email (that are now not imported).
Timeout for big calendars.
Hardcoded time value.

opw-2658427

closes odoo/odoo#78161

Signed-off-by: Arnaud Joset <arj@odoo.com>