[16.0][IMP]stock_report_quantity_by_location: Included report generation

[anusriNPS]

Included pdf report generation functionality for module  "stock_report_quantity_by_location"

Reports uses different html tags for view and print report functionality:
        - View report uses div tags with classes defined in css file
        - Printing report uses table related tags such as thead, tr, td etc based on web.internal layout used in template

[anusriNPS]

View report and export pdf report:

[PicchiSeba]

Code review: minor fixes

[PicchiSeba]

suggestion: let's maintain the same string translation/formatting structure as the other modules

Suggested change

	_("Failed context evaluation: %(context)s", context=new_context)
	_("Failed context evaluation: %(context)s") % {"context": new_context}

[anusriNPS]

Modified as suggested

[PicchiSeba]

issue: we should use the proper way to open an action

Suggested change

	action = self.env.ref(
	"stock_report_quantity_by_location."
	"action_stock_report_quantity_by_location_html"
	)
	vals = action.read()[0]
	action = self.env["ir.actions.act_window"]._for_xml_id(
	"stock_report_quantity_by_location."
	"action_stock_report_quantity_by_location_html"
	)

Following this change, rename the following instances of vals with action

[anusriNPS]

Used "ir.actions.actions" to get an action

[PicchiSeba]

Code review: LGTM