Updated PlayerMovement to support ClimbHandController with wall hit point s.
Introduced climb-related events to notify external systems of climb state changes, Added properties for normalized stick time and wall-sticking state.
manage the FPS climb hand visibility, position, and animations. The hand responds to climb events, transitioning smoothly between states and playing animations for wall-sticking. Added safeguards for event subscriptions and coroutine management.
Enhanced climb prompt handling to trigger events when visibility changes. Added metadata for the new `ClimbHandController.cs` script.
