Documentation integration (#4653)

* Add documentation under docs/ directory

* Add CI workflow for mkdocs configuration checking

* Add documentation issue template

* update pip-tools?

* Update .gitignore files

* Fix .gitignore rules

* Improve release notes page

* remove references to old repo

docs/docs/stock/status.md

@@ -0,0 +1,42 @@
+---
+title: Stock Status
+---
+
+## Stock Status
+
+Stock status serves at categorizing and identifying the state of stock items.
+
+Below is the current list of stock status and their proposed meaning:
+
+| Status      | Description |
+| ----------- | ----------- |
+| OK | Stock item is healthy, nothing wrong to report |
+| Attention needed | Stock item hasn't been checked or tested yet |
+| Damaged | Stock item is not functional in its present state |
+| Destroyed | Stock item has been destroyed |
+| Lost | Stock item has been lost |
+| Rejected | Stock item did not pass the quality control standards |
+| Returned | Stock item was returned to seller (if bought) or is a customer return (if sold) |
+| Quarantined | Stock item has been intentionally isolated and it unavailable |
+
+Stock status code will remove the stock from certain operations. For instance, users can't add "destroyed" or "lost" stock to a sales order.
+
+The stock status is displayed as a label in the header of each stock item detail page, for instance here the stock status is "OK":
+
+{% with id="stock_status_label", url="stock/stock_status_label.png", description="Stock Status Label" %}
+{% include 'img.html' %}
+{% endwith %}
+
+## Update Status
+
+In the "Stock" tab of the part view, select all stock items which stock status needs to be updated:
+
+{% with id="stock_status_change_multiple", url="stock/stock_status_change_multiple.png", description="Stock Status Status Multiple" %}
+{% include 'img.html' %}
+{% endwith %}
+
+Click on `Stock Options > Change stock status`, select the new status then submit. All selected stock items status will be automatically updated:
+
+{% with id="stock_status_change_multiple_done", url="stock/stock_status_change_multiple_done.png", description="Stock Status Status Multiple Done" %}
+{% include 'img.html' %}
+{% endwith %}