sora2looseload v1.0.0

First public release of the Trails in the Sky 2nd Chapter adaptation.\n\nForked from Hinkiii/sora1looseload at upstream commit 04e898e.\n\nImportant: keep the official Steam sora_2nd.exe. Do not combine this DLL with an executable that embeds another loose-file loader. Voice mods should provide their voice, table/table_sc, and script/script_sc resources separately.\n\nValidation: clean Release|x64 build, unit tests, official-target signatures, AMD64 PE check, and all seven XInput exports/ordinals. The current artifact still requires a fresh in-game smoke test.