Reduce Async FrameBuffer memory usage - #105

from ~33MB to ~4.8MB per slot (#90)

• Add packed buffer support to WrappedBuffer
• In FrameBuffer, pack only dynamic game data (4 slices totaling ~4.8MB) instead of copying the full 33MB buffer, and remove frame-0 loop that copied 33MB to all buffers
• Auto-generate AsyncClientData via DumpToClient:
  • Route dynamic game state reads/writes through offset deltas
  • Route static map/region data reads to the live shared memory buffer
  • Centralize slice boundaries and buffer constants in AsyncClientData as single source of truth for FrameBuffer
• Keep synchronous mode fully backward-compatible using ClientData directly
• Wire AsyncClientData in BotWrapperAsync
• Add AsyncClientDataTest to verify memory size reduction and correct reading of static vs dynamic data