Use a news_related_module_root for feed news

[armanddidierjean]

Description

Summary

Instead of having only one module field, we store:

• related_module: the module that created the fedd news
• module: the module that should be used for actions

These two modules may be differents. For example the calendar can create a news which action is a ticket event.

[codecov]

Codecov Report

❌ Patch coverage is 57.89474% with 16 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
app/modules/calendar/endpoints_calendar.py	50.00%	5 Missing ⚠️
app/core/feed/utils_feed.py	42.85%	4 Missing ⚠️
app/core/tickets/endpoints_tickets.py	50.00%	3 Missing ⚠️
app/core/feed/endpoints_feed.py	0.00%	2 Missing ⚠️
app/core/feed/cruds_feed.py	88.88%	1 Missing ⚠️
app/modules/calendar/utils_calendar.py	75.00%	1 Missing ⚠️

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