feat(perf): cache convar, engine autobunnyhopping

[Rushaway]

• This change aim performance by replacing OnPlayerRunCmd with sv_autobunnyhopping
• Caching convar values used multiples time
• Do not unload plugins (Antibhopcheat automaticly detect sv_autobunnyhopping changes)

[Copilot]

Pull request overview

This PR updates the map-specific SourceMod plugin to reduce per-tick overhead by removing the OnPlayerRunCmd auto-bhop implementation in favor of engine convars, and by caching frequently-read convar values.

Changes:

• Replace the OnPlayerRunCmd bunnyhop logic with toggling sv_autobunnyhopping and sv_airaccelerate during race mode.
• Cache sm_makovote_rtd and sm_makovote_cd_maxstages values and keep them updated via convar change hooks.
• Stop unloading/reloading AntiBhopCheat and adminmenu when toggling race bhop.