Machine registry improvements (#10150)

* Add wrapper function for machine registry

* Decorate entrypoint functions

* Docstrings

* Fix for boolean setting

* Add playwright tests

* Use proper entrypoints

* Ensure settings are fetched correctly

* Prevent recursion of machine registry decorator

* Fix machine status display

* Enhanced warning msg

* Add simple machine sample printer

* Adds playwright tests for machine UI

* re-throw exception

* Define 'machine' plugin mixin class

* Adjust machine discovery

* Use plugin mixins for registering machine types and drivers

* Adjust unit test

* Remove plugin static files when deactivating

* Force machine reload when plugin registry changes

* Add plugins specific to testing framework

* Add test for plugin loading sequence

* Add session caching

- Significantly reduce DB hits

* Enhanced unit testing and test plugins

* Refactor unit tests

* Further unit test fixes

* Adjust instance rendering

* Display table of available drivers

* Cleanup

* ADjust unit test

* Tweak unit test

* Add docs on new mixin type

* Tweak machine overview docs

* Tweak playwright tests

* Additional unit test

* Add unit test for calling machine func

* Enhanced playwright tests

* Account for database not being ready

docs/docs/plugins/mixins/barcode.md

@@ -2,7 +2,7 @@
 title: Barcode Mixin
 ---
 
-## Barcode Plugins
+## BarcodeMixin
 
 InvenTree supports decoding of arbitrary barcode data and generation of internal barcode formats via a **Barcode Plugin** interface. Barcode data POSTed to the `/api/barcode/` endpoint will be supplied to all loaded barcode plugins, and the first plugin to successfully interpret the barcode data will return a response to the client.