new customization features

• custom shapes!
• particles preview

Kanban Compatibility (https://github.com/shap-po/obsidian-party/issues/6)

• new setting for kanban
• effect settings are now stored in "effectConfigs" so that new configs can be added easier

effect settings

• copy/paste/reset settings
• confirmation dialog for reset

other

• donations links
• moved css to a separate folder