feat: add auth subsystem with WebAuthn passkeys support

New modules: lib/auth, lib/auth_users, lib/db, lib/db_sqlite, lib/password,
lib/webauthn, daemon/handlers/auth, scripts/bootstrap_auth, tests/test_auth

Frontend: webui/api/auth, hoover/components/auth, pages/login, passkeys, users

Updates: daemon/iface and server, lib/common and nginx, pyproject.toml deps,
install script, server.py, app.js, and websocket/api clients

pyproject.toml

@@ -12,6 +12,9 @@ dependencies = [
     "aiohttp>=3.9,<4.0",
     "passlib>=1.7.4,<2.0",
     "requests-unixsocket>=0.2,<1.0",
+    "PyJWT>=2.8,<3.0",
+    "argon2-cffi>=23.1.0,<25.0",
+    "webauthn>=3.0.0,<4.0",
 ]
 
 [project.scripts]