[PUI] Small nav additions

[matmair]

This PR:

• Adds more nav items (everything that is in the header)
• changes the action on the InvenTree logo to open nav instead of going home

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[SchrodingersGat]

Nice addition :) Can I request some small aesthetic tweaks:

• Make the elements larger, with more padding. they are hard to click!
• Add an icon to each one, similar to what we have on the nav bar in CUI

[matmair]

I can add the padding but I do not really see the point with icons, we do not have them in the header nav either

[SchrodingersGat]

@matmair happy to merge in now, can continue to tweak as we go :)