Add licenses of our direct dependencies

licenses/android-activity.txt

licenses/gbs-downloader.txt

licenses/haskell-magic-wormhole.txt

licenses/haskell-spake2.txt

licenses/magic-foldr.txt

licenses/nix-thunk.txt

licenses/reflex-platform.txt

licenses/tahoe-capabilities.txt

licenses/tahoe-chk.txt

licenses/tahoe-directory.txt

licenses/tahoe-great-black-swamp.txt

licenses/tahoe-ssk.txt