Support physical units for BOM lines (#11631)

* Add new "raw_amount" field to BomItem model

* Batch process data migration

* Update migration

* Calculate 'quantity' from 'raw_amount' field

* Improve decimal formatting in migration

* Allow raw_amount in serializer

* Adjust frontend form

* API validation and unit tests

* Additional playwright tests

* Update API version and CHANGELOG

* Updated docs

* Fix docstring

* Better handling of empty values

* Tweak unit tests

* Tweak unit test

* Fix unit test

* Adjust form field text

* Adjust migration file

* Tweak playwright tests

* Fix unit test

* Adjust serializers / import-export / playwright

* Fix migration

* Fix validation

* Loosen comparison

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Co-authored-by: Matthias Mair <code@mjmair.com>

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- [#11631](https://github.com/inventree/InvenTree/pull/11631) adds "raw_amount" field to the BomItem model, allowing BOM quantities to account for the units of measure of the underlying part.
 - [#11872](https://github.com/inventree/InvenTree/pull/11872) adds a global setting to allow or disallow the deletion of serialized stock items.
 - [#11861](https://github.com/inventree/InvenTree/pull/11861) adds support for bulk-replacing a component in multiple BOMs simultaneously
 - [#11853](https://github.com/inventree/InvenTree/pull/11853) adds BOM comparison functionality, allowing users to compare the BOM of one assembly with another assembly.