ODC Portal sidebar menu improvements

With the increasing number of menu entries in the ODC Portal, we realized that we needed to reassess the sidebar navigation. Our goals are to make sure it accommodates both current and future needs, stays user-friendly, and helps users navigate through ODC Portal. With the goal of improving learnability, findability, and accessibility within the ODC, our UX team conducted an assessment of the current state of navigation, taking into account user feedback and insights. They prioritized improvements based on this feedback, focusing on scalability, unity, and consistency.