Refactor states/status (#4857)

* add file for states

* move general definition out

* add some tests and docs

* add tests for invalid definitions

* make status_label tag generic

* move templatetags

* remove unused tag

* rename test file

* make status label a lookup

* rename tags

* move import structure

* add missing tag

* collect states dynamically

* fix context function

* move api function out

* add tests for tags

* rename tests

* refactor imports

* Add test for API function

* improve errors and add tests for imporved errors

* make test calls simpler

* refactor definitions to use enums

* switch to enum

* refactor definitions to use enums

* fix lookup

* fix tag name

* make _TAG lookup a function

* cleanup BaseEnum

* make _TAG definition simpler

* restructure status codes to enum

* reduce LoC

* type status codes as int

* add specific function for template context

* Add definition for lookups

* fix filter lookup

* TEST: "fix" action lookup

* Add missing migrations

* Make all group code references explict

* change default on models to value

* switch to IntEnum

* move groups into a seperate class

* only request _TAG if it exsists

* use value and list

* use dedicated groups

* fix stock assigment

* fix order code

* more fixes

* fix borked change

* fix render lookup

* add group

* fix import

* fix syntax

* clenup

* fix migrations

* fix typo

* fix wrong value usage

* fix test

* remove group section

* remove group section

* add more test cases

* Add more docstring

* move choices out of migrations

* change import ordeR?

* last try before I revert

* Update part.migrations.0112

- Add custom migration class which handles errors

* Add unit test for migration

- Ensure that the new fields are added to the model

* Update reference to PR

---------

Co-authored-by: Oliver Walters <oliver.henry.walters@gmail.com>

InvenTree/stock/migrations/0061_auto_20210511_0911.py

@@ -190,7 +190,7 @@ def update_history(apps, schema_editor):
                 tracking_type = StockHistoryCode.RECEIVED_AGAINST_PURCHASE_ORDER
 
             if tracking_type is not None:
-                entry.tracking_type = tracking_type
+                entry.tracking_type = tracking_type.value
                 updated = True
 
             if updated:

InvenTree/stock/migrations/0096_auto_20230330_1121.py

@@ -43,7 +43,7 @@ def update_stock_history(apps, schema_editor):
         history.deltas['salesorder'] = item.sales_order.pk
 
         # Change the history type
-        history.tracking_type = StockHistoryCode.SHIPPED_AGAINST_SALES_ORDER
+        history.tracking_type = StockHistoryCode.SHIPPED_AGAINST_SALES_ORDER.value
 
         history.save()
         n += 1

InvenTree/stock/migrations/0102_alter_stockitem_status.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.2.19 on 2023-06-04 17:43
+
+import django.core.validators
+from django.db import migrations, models
+import InvenTree.status_codes
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stock', '0101_stockitemtestresult_metadata'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='stockitem',
+            name='status',
+            field=models.PositiveIntegerField(choices=InvenTree.status_codes.StockStatus.items(), default=10, validators=[django.core.validators.MinValueValidator(0)]),
+        ),
+    ]