Navigation bar

[D4ni3l8]

This is the initial navigation bar. This will need further changes.

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit d86f999):

https://adv-web-grp1--pr25-navigation-bar-7551xl24.web.app

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[advweb-grp1]

Nav bar has been defined in core layout #24