Harden third-party licensing and provenance

Document project identity, third-party licenses, binary and asset provenance, and move SuperWoW/SuperAPI to upstream-only distribution.

Payload/Interface/Addons/SuperAPI/README.md

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-### Addon to allow compability between the mod and vanilla default interface. Also adds a minimap icon to change some mod settings. It is recommended for addon makers to read this to get a gist of some of the mod's features
-
-### Settings
-Right click the minimap icon to choose persistent options for:
-- Autoloot
-- Clickthrough
-- GUID in combat log/events
-- FoV
-- Background Sound
-- Uncapped Sounds
-- Targetting circle style
-
-**NOTE: If using Vanilla Tweaks quickloot all of the Autoloot options will be reversed (always on will actually be always off, Shift to toggle on will be Shift to toggle off etc).**
-
-### Other features
-- Adds "mouseover" support to all default blizzard unitframes
-- Shows item charges in bag
-- Allows Shift clicking a spell in your spellbook to link it to chat
-- Adds chat command to toggle showing unit names or GUIDs in combat log
-  
-## Modules:
-https://github.com/balakethelock/SuperAPI_Castlib provides improved castbars, alternatively the latest version of pfui/shaguplates now do the same