[FW][IMP] inventory: CRL - replenishment & visibility days

[fw-bot]

Fix inaccuracies about visibility days explanation, with improved example and supportive imagery to visualize how the dates work together.

Changelog

• restructure reordering rules documentation by pulling the section about how the replenishment report works into a new document
• Elaborate more about preferred route + other advanced fields
• Explain just-in-time logic
• Explain how the Forecasted quantities are determined
• Create custom visualizations for visibility days and forecasted date
• Backport explanation about days to purchase (may run into merge conflicts when fwporting because of the internal links' naming scheme!)

FWport: to master

Forward-Port-Of: #11966
Forward-Port-Of: #11444

[robodoo]

[fw-bot]

@Felicious this PR targets master and is the last of the forward-port chain containing:

• [FW][IMP] inventory: CRL - replenishment & visibility days #12006

To merge the full chain, use

@robodoo r+

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[Felicious]

@robodoo r+