Release v2.9.1

Recent Changes

• • Updated version to v2.9.1 while keeping own repository reference - Merged upstream README changes - Preserved Tailscale Multi-Node Management documentation - Removed Universal Bot Controller section (no longer in use) - Updated RaidMemoryManager and RotatingRaidBotSV from upstream - Removed deprecated RaidPokemonGenerator
• Fix Encounter9RNG.GenerateData returning early for shiny raids
• Bump version to v8.7.8
• Refactor RotatingRaidBotSV for better performance and readability
• Clean up project section in README
• Remove redundant RaidPokemonGenerator, use PKHeX's Encounter9RNG instead
• Update README.md
• Fix IsActive flag offset causing dens to not activate