Bugfix: Standalone Publish - ValidateTextureBatchWorkfiles settings

[2-REC]

Brief description

The ValidateTextureBatchWorkfiles plugin of the "Standalone Publish" tool expects an undefined setting for the main workfile extensions.

Description

The class variable main_workfile_extensions is initialised to a specific value (mra), which cannot be overridden as no setting is defined for the plugin.
Additionally, the setting is already defined for the plugin CollectTextures and should thus be reused/shared ("Main workfile extensions"):

project_settings/standalonepublisher/publish/CollectTextures/main_workfile_extensions

Not reusing the same setting creates redundancy and potential issues as different values can then be set.
The ValidateTextureBatchWorkfiles plugin should thus get the setting value set from the CollectTextures plugin.

[2-REC]

NOTE: I am not sure getting the setting from another plugin this way is the best way, as the name of the plugin and setting are hardcoded.

[kalisp]

I think its fine, we are using this approach to get plugin settings from different plugin in multiple places.

Just please remove TODO comments and class variable, I don't think having it as a fallback is necessary and I will approve it and merge.

[2-REC]

Just please remove TODO comments and class variable, I don't think having it as a fallback is necessary and I will approve it and merge.

Should we still catch the exception if the setting is missing, or just remove the try/except block?

[kalisp]

I would probably catch the exception and manipulate it into something human readable for artists.