* OP-6357 - removed unneeded import
* OP-6357 - extracted logic for getting custom group and namespace from Settings
Mimicing logic in ReferenceLoader, eg. group could be left empty >> no groupping of imported subset.
* OP-6357 - same logic for abc animation as Reference
* OP-6357 - same logic for yeti rig as ReferenceLoder
Allows to not create wrapping group.
* OP-6357 - added separate import_loader to settings
Could be used to not creating wrapping groups when Group kept empty.
* OP-6357 - added product subset conversion for ayon settings
* OP-6357 - fix using correct variable
Artist input comes from `data` not directly from self.options
* OP-6357 - add attach_to_root to options to allow control by same key
* OP-6357 - added docstring
* Added settings for Import loaders in maya
* OP-6357 - refactored formatting
* changed 'defaults' to 'default_variants' in create templates
* use 'template_create_plugin' instead of 'schema_maya_create_render'
* resave defaults and add Main to default value
* updated AYON settings
* formatting fixes
* unified indentation
* renamed 'Default Subsets' to 'Default Variants'
* copied addons from 'ayon-addon-settings'
* added AE, photoshop and harmony addon
* moved openpype to subfolder
* cleanup repository files
* updated create package script and README.md
* formatting fixes
* added cli flags to be able keep server structure
* print progress and output dir
* another formatting fixes
