Spectrum: Optical

First photon energy layer for Spectrum: Optical.

• Added the LU photon energy model and the shared EnergyStorage interface for storage blocks.
• Added BeamPayload, WavelengthBand, and BeamConsumer so blocks can receive beam parameters through a common contract.
• Migrated beam_receiver to the shared beam consumer contract.
• Added solar_collector: generates photon energy under open sky, affected by time of day and weather.
• Added photon_cell: compact energy storage with configurable output rate, wavelength band, and enabled state.
• Added photon_absorber: accepts an incoming beam from the correct side and transfers energy into adjacent storage.
• Added the multiblock accumulator: accumulator_core and accumulator_wall, with a 3x3x3 structure for increased capacity.
• Added precision_beam_emitter: a configurable beam emitter powered by adjacent photon storage.
• Added texture-free code-drawn GUIs for solar collector, photon cell, accumulator core, and precision beam emitter.
• Added screen handlers for the new energy blocks.
• Added recipes, blockstates, block models, item models, creative tab entries, and localization for the new blocks.
• Precision beam emitter now spends energy according to the beam recalculation interval.
• Precision beam emitter now applies beam world effects just like the regular beam emitter.
• New energy blocks are protected from white beam destruction and red beam ignition.
• New machine GUIs now validate distance and block state through ScreenHandler.canUse.
• Solar collector and photon absorber now skip full adjacent storages when transferring energy.