[Orgs] Update Header and Sidebar view

[usame-algan]

Links

Epic on Notion: https://www.notion.so/safe-global/Org-onboarding-flow-1208180fe57380078591f5380a0c5d2a

What must be done

• The Header doesn't have a white background anymore
• The Safe Logo is reduced and part of the Sidebar
• The Sidebar contains the Org Selector (Empty if not signed-in)
• There are Breadcrumbs for the Org

Designs/sketches

https://www.figma.com/design/PeChIDi5UKPjf58IOChtET/Organizations?node-id=4030-24224&m=dev

How to test it

• Compare the implementation with the Design