Feature request: improved rotation control and increased attachment limits

[GabrielLucioC]

I would like to suggest some improvements to the open.mp API that could help expand scripting possibilities and improve flexibility for developers:

1. Increase the number of available indices in SetPlayerAttachedObject, allowing more attached objects per player without requiring workarounds.
2. Add a native function like SetPlayerRotation, enabling full 3D player rotation control instead of only relying on SetPlayerFacingAngle.
3. Add a native function like SetVehicleRotation, allowing direct control over vehicle orientation in full 3D space.

These additions would greatly improve animation systems, custom interactions, and advanced gameplay mechanics, especially for servers that rely on custom movement, effects, and synchronization.