LibreQuake — quake.by browser build

pak0.pak, pak1.pak and the music/configs in extras.pk3 come unmodified from the
LibreQuake v0.09-beta "lite" release:
https://github.com/lavenderdotpet/LibreQuake/releases/tag/v0.09-beta
Models, textures, maps and sounds are BSD-3-Clause (docs/COPYING); the QuakeC
game code (progs.dat) and pop.lmp are GPL-2.0 (docs/misc-docs-COPYING).
See docs/README-IMPORTANT-LICENCE-INFO and docs/CREDITS.
LibreQuake source: https://github.com/lavenderdotpet/LibreQuake

Engine: FTEQW, prebuilt upstream WebAssembly engine, GPL-2.0
(../licenses/gpl-2.0.txt). Download origin and binary hashes are in
../engine/engine-lock.json. Source: https://github.com/fte-team/fteqw
The binary lock identifies the tested files, but does not establish the exact
corresponding source revision or a reproducible engine build.