Item Flow Monitor

Added

• Real-time item flow rate overlay for containers (items/min, items/hour)
• Time-to-full estimate tooltip on hover
• Three calculation modes: Average, Actual, Predicted (EMA smoothing)
• Support for all standard containers: chests, double chests, hoppers, furnaces, blast furnaces, smokers, barrels, dispensers, droppers, shulker boxes
• Three item tracking modes: All Items, First Item (auto-detect), Pick Item (manual selection)
• Settings panel with toggle, period, rate mode, tracking mode, item selector, and reset
• Configuration screen via Mod Menu (toggle per container type)
• Observer-based tracking architecture (Lithium compatible)
• Localization: 12 languages (en, ru, zh_cn, zh_tw, de, fr, es, pt_br, ja, ko, uk, pl)