Implement production vertical slice foundation

game/application/vehicle/camera_look_command.gd

@@ -0,0 +1,22 @@
+class_name CameraLookCommand
+extends RefCounted
+
+var yaw_delta_radians: float
+var pitch_delta_radians: float
+var recenter_requested: bool
+
+
+func _init(
+	p_yaw_delta_radians: float = 0.0,
+	p_pitch_delta_radians: float = 0.0,
+	p_recenter_requested: bool = false
+) -> void:
+	yaw_delta_radians = p_yaw_delta_radians
+	pitch_delta_radians = p_pitch_delta_radians
+	recenter_requested = p_recenter_requested
+
+
+func validation_error() -> String:
+	if not is_finite(yaw_delta_radians) or not is_finite(pitch_delta_radians):
+		return "camera look deltas must be finite"
+	return ""