[FIX] multi-store: Update store_id access logic to support multiple stores

[fw-bot-adhoc]

Forward-Port-Of: #101

[roboadhoc]

[fw-bot-adhoc]

@rov-adhoc @cav-adhoc cherrypicking of pull request #101 failed.

stdout:

CONFLICT (modify/delete): account_multi_store/__manifest__.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of account_multi_store/__manifest__.py left in tree.
CONFLICT (modify/delete): account_multi_store/security/multi_store_security.xml deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of account_multi_store/security/multi_store_security.xml left in tree.
CONFLICT (modify/delete): base_multi_store/__manifest__.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of base_multi_store/__manifest__.py left in tree.
CONFLICT (modify/delete): base_multi_store/security/multi_store_security.xml deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of base_multi_store/security/multi_store_security.xml left in tree.
CONFLICT (modify/delete): purchase_multi_store/__manifest__.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of purchase_multi_store/__manifest__.py left in tree.
CONFLICT (modify/delete): purchase_multi_store/security/multi_store_security.xml deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of purchase_multi_store/security/multi_store_security.xml left in tree.
CONFLICT (modify/delete): sale_multi_store/__manifest__.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of sale_multi_store/__manifest__.py left in tree.
CONFLICT (modify/delete): sale_multi_store/models/sale_order.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of sale_multi_store/models/sale_order.py left in tree.
CONFLICT (modify/delete): sale_multi_store/security/multi_store_security.xml deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of sale_multi_store/security/multi_store_security.xml left in tree.
CONFLICT (modify/delete): stock_multi_store/__manifest__.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of stock_multi_store/__manifest__.py left in tree.
CONFLICT (modify/delete): stock_multi_store/models/stock_orderpoint.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of stock_multi_store/models/stock_orderpoint.py left in tree.
CONFLICT (modify/delete): stock_multi_store/models/stock_picking_type.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of stock_multi_store/models/stock_picking_type.py left in tree.
CONFLICT (modify/delete): stock_multi_store/models/stock_rule.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of stock_multi_store/models/stock_rule.py left in tree.
CONFLICT (modify/delete): stock_multi_store/models/stock_warehouse.py deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of stock_multi_store/models/stock_warehouse.py left in tree.
CONFLICT (modify/delete): stock_multi_store/security/multi_store_security.xml deleted in 3ce56791f2274ac889d78b72c50e00b6f47c3b69 and modified in c40aa9299de644653209623b57506e96d602214e.  Version c40aa9299de644653209623b57506e96d602214e of stock_multi_store/security/multi_store_security.xml left in tree.

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

In the former case, you may want to edit this PR message as well.

⚠️ after resolving this conflict, you will need to merge it via @roboadhoc.

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