[Feature] Stocktake reports (#4345)

* Add settings to control upcoming stocktake features

* Adds migration for "cost range" when performing stocktake

* Add cost data to PartStocktakeSerializer

Implement a new custom serializer for currency data type

* Refactor existing currency serializers

* Update stocktake table and forms

* Prevent trailing zeroes in forms

* Calculate cost range when adding manual stocktake entry

* Display interactive chart for part stocktake history

* Ensure chart data are converted to common currency

* Adds new model for building stocktake reports

* Add admin integration for new model

* Adds API endpoint to expose list of stocktake reports available for download

- No ability to edit or delete via API

* Add setting to control automated deletion of old stocktake reports

* Updates for settings page

- Load part stocktake report table
- Refactor function to render a downloadable media file
- Fix bug with forcing files to be downloaded
- Split js code into separate templates
- Make use of onPanelLoad functionalitty

* Fix conflicting migration files

* Adds API endpoint for manual generation of stocktake report

* Offload task to generate new stocktake report

* Adds python function to perform stocktake on a single part instance

* Small bug fixes

* Various tweaks

- Prevent new stocktake models from triggering plugin events when created
- Construct a simple csv dataset

* Generate new report

* Updates for report generation

- Prefetch related data
- Add extra columns
- Keep track of stocktake instances (for saving to database later on)

* Updates:

- Add confirmation message
- Serializer validation checks

* Ensure that background worker is running before manually scheduling a new stocktake report

* Add extra fields to stocktake models

Also move code from part/models.py to part/tasks.py

* Add 'part_count' to PartStocktakeReport table

* Updates for stocktake generation

- remove old performStocktake javascript code
- Now handled by automated server-side calculation
- Generate report for a single part

* Add a new "role" for stocktake

- Allows fine-grained control on viewing / creating / deleting stocktake data
- More in-line with existing permission controls
- Remove STOCKTAKE_OWNER setting

* Add serializer field to limit stocktake report to particular locations

* Use location restriction when generating a stocktake report

* Add UI buttons to perform stocktake for a whole category tree

* Add button to perform stocktake report for a location tree

* Adds a background tasks to handle periodic generation of stocktake reports

- Reports are generated at fixed intervals
- Deletes old reports after certain number of days

* Implement notifications for new stocktake reports

- If manually requested by a user, notify that user
- Cleanup notification table
- Amend PartStocktakeModel for better notification rendering

* Hide buttons on location and category page if stocktake is not enabled

* Cleanup log messages during server start

* Extend functionality of RoleRequired permission mixin

- Allow 'role_required' attribute to be added to an API view
- Useful when using a serializer class that does not have a model defined

* Add boolean option to toggle whether a report will be generated

* Update generateStocktake function

* Improve location filtering

- Don't limit the actual stock items
- Instead, select only parts which exist within a given location tree

* Update API version

* String tweaks

* Fix permissions for PartStocktake API

* More unit testing for stocktake functionality

* QoL fix

* Fix for assigning inherited permissions

InvenTree/plugin/registry.py

@@ -109,7 +109,7 @@ class PluginsRegistry:
             full_reload (bool, optional): Reload everything - including plugin mechanism. Defaults to False.
         """
 
-        logger.info('Start loading plugins')
+        logger.info('Loading plugins')
 
         # Set maintanace mode
         _maintenance = bool(get_maintenance_mode())
@@ -268,7 +268,7 @@ class PluginsRegistry:
         # Collect plugins from paths
         for plugin in self.plugin_dirs():
 
-            logger.info(f"Loading plugins from directory '{plugin}'")
+            logger.debug(f"Loading plugins from directory '{plugin}'")
 
             parent_path = None
             parent_obj = Path(plugin)
@@ -306,7 +306,7 @@ class PluginsRegistry:
 
         # Log collected plugins
         logger.info(f'Collected {len(collected_plugins)} plugins!')
-        logger.info(", ".join([a.__module__ for a in collected_plugins]))
+        logger.debug(", ".join([a.__module__ for a in collected_plugins]))
 
         return collected_plugins
 
@@ -383,7 +383,7 @@ class PluginsRegistry:
                 self.plugins_inactive[key] = plugin.db
             self.plugins_full[key] = plugin
 
-        logger.info('Starting plugin initialisation')
+        logger.debug('Starting plugin initialisation')
 
         # Initialize plugins
         for plg in self.plugin_modules:
@@ -425,9 +425,10 @@ class PluginsRegistry:
 
                 # Initialize package - we can be sure that an admin has activated the plugin
                 logger.info(f'Loading plugin `{plg_name}`')
+
                 try:
                     plg_i: InvenTreePlugin = plg()
-                    logger.info(f'Loaded plugin `{plg_name}`')
+                    logger.debug(f'Loaded plugin `{plg_name}`')
                 except Exception as error:
                     handle_error(error, log_name='init')  # log error and raise it -> disable plugin