Adds 'consumable' field to BomItem model (#2890)

* Adds 'consumable' field to BomItem model

* Add consumable field to API

* Consumable items always count as "allocated" for a build

* Add new BOM fields to BOM item checksum calculation

* Display 'consumable' status in BOM table

* Fix order of database migrations

* Update unit tests

* Fix for BOM table

* Remove "infinite" field from StockItem model

- Not used anywhere for functionality
- Hidden from the user
- Now replaced by the "consumable" concept in the BuildOrder model

* Update build order allocation table display

* Prevent auto-allocation of stock to consumable BOM items

* Ignore consumable BOM items when allocating stock to a build order

* Reimplmement "footer" row for BOM table

* Fix "can_build" calculation

- Ignore "consumable" BOM items

* Unrelated typo fix

* Tweak BOM table

* More visual tweaks to BOM table

* Add unit test for consumable field

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -18,7 +18,7 @@ body:
     attributes:
       label: "Problem statement"
       description: "A clear and concise description of what the solved problem or feature request is."
-      placeholder: "I am always struggeling with ..."
+      placeholder: "I am always struggling with ..."
   - type: textarea
     id: solution
     validations: