Added a dedicated DevTools admin list with a deny-all empty default.
Added DevToolsAdmins, ValheimAdmins, Either, and Both authorization
modes; DevToolsAdmins is the public default.
Removed the ambiguous legacy authorization settings from active policy.
Added unrestricted current-network-prefab spawning for trusted administrators.
Supports spawn amounts from 1 through 1000 inclusive.
Added authenticated support for god, fly, nocost, players, listkeys,
and other commands selected dynamically from the current Valheim command
registry.
Added server-owned network object creation, item stack splitting, validation,
and rollback on partial spawn failure.