Add Google Chrome tips: Shortcuts, tab groups, profiles, performance settings

Why is this change being made?

During my Macbook refresh in https://gitlab.com/gitlab-com/it/end-user-services/issues/laptop-issue-tracker/-/issues/2621 I have reviewed the best practices handbooks for security and tools and tips. For Google Chrome, I used the profile sync to migrate all bookmarks for example.

This MR adds more Chrome tips from practical usage over the past years, which can be helpful for everyone.

1. Keyboard shortcuts (initially, I learned about searching all opened tabs)
2. Use tab groups for greater efficiency (thanks @msedlakjakubowski for the hint a while ago)
3. Profile documentation and migration for laptop refresh URL
4. Chrome Performance settings. A friend recently pointed me to the memory saver feature added in 2023 which greatly helped on the old Intel Macbook too.

Author Checklist

• Provided a concise title for this Merge Request (MR)
• Added a description to this MR explaining the reasons for the proposed change, per say why, not just what
  • Copy/paste the Slack conversation to document it for later, or upload screenshots. Verify that no confidential data is added.
• Assign reviewers for this MR to the correct Directly Responsible Individual/s (DRI)
  • If the DRI for the page/s being updated isn’t immediately clear, then assign it to one of the people listed in the Maintained by section on the page being edited
  • If your manager does not have merge rights, please ask someone to merge it AFTER it has been approved by your manager in #mr-buddies
• If the changes affect team members, or warrant an announcement in another way, please post an update in #whats-happening-at-gitlab linking to this MR
  • If this is a change that directly impacts the majority of global team members, it should be a candidate for #company-fyi. Please work with internal communications and check the handbook for examples.

---