Update acceleration components

When we request a velocity change in the scenario file, the acceleration is updated as expected. However, when we see velocity changes in the longitudinal, lateral or vertical components, the acceleration is not updated as expected and remains null. This is a problem for the AstasEnvironment PlausibilityChecks, which expect velocity-dependent acceleration values, and not only acceleration requested from the scenarios.

Changes:

• Updated the acceleration's components based on the ground truth's velocity changes when the scenario file doesn't mention any desiredVelocityProfile
• Added an acceleration vector utility