Purpose of this task:
Show forecasted inventory for all products.
Before this commit we have to search forecasted inventory for each product individually.
There is no way to check all the forecasted inventory in a single menu.

After this commit:
User can search for all forecasted inventory from the menu 'Forecasted Inventory'.
Features added.
1. Menu for Forecasted Inventory has been added.
2. List and pivot view for Forecasted Inventory added.
3. Default measures has been set to 'Quantity' and 'Cumulative Quantity'.
4. Pivot view is grouped by product (vertical) and by weeks (horizontal).

Why query changes required:
User can search for all forecasted inventory from the menu 'Forecasted Inventory'.
Features added.
1. lines only those containing any stock move will be shown.
2. Reference field added.
3. We remove 'week' from the query, instead of we fetch all the data according to 'date_expected',
and we create three group_bys (i.e. group by date, week and month)
so it is easy for the user to check report according to day, week and month.

This commit is related to task 36088.

Before this commit:
specific group by for pivot view/graph view is not working.

After this commit:
apply group by differently for different view using keys like 'pivot_row_groupby', 'graph_groupbys'
i.e. if pivot_row_group by is pass in context then group by according to this in pivot view not default one

give highest priority to pivot_row_groupby/graph_groupbys then group_by and then field have type from action context for default groupby in pivot/graph view

related Task: #1848289,odoo#36088

Co-authored-by: Mohammed Shekha <msh@openerp.com>
Co-authored-by: Suraj Shukla <suh@odoo.com>

Before this commit :
User can see all the records if those are not belong to its company.
After this commit:
User can see the records of its own and its child company.

This commit is related to task_id : 36088.

…lter in new search view