HyHorde Arena PvE

Bump mod version to 1.1.0 and add configurable round start/victory sounds. Updates include: UI changes in HordeConfigPage (new Sounds tab, bindings, labels, help text, snapshot fields and cycling handlers), README/manifest/gradle version bumps, and new HordeService functionality to enumerate, score, sanitize and resolve sound event IDs (auto/none modes, hint & blocked keywords, caching, option lists and heuristics). Round start/victory sounds are now played at round begin/end and cache is invalidated on config save. Also expands preferred reward test items and tightens some reward logging/messages.