Move sub-tabs to sidebar

[lukasschor]

What is this feature about? (1 sentence)

This will implement the new design for the sub-tabs in settings and assets view by moving the selection to the sidebar.

Why is it needed? What is the value? For whom do we build it?

• This provides more space for the settings screens.
• It makes the collectibles section more discoverable

High-level overview of the feature

• This ticket is about the collapsible section for assets and settings.
  • i.e. not Safe apps
• Navigation specs according to this comment below
  • Opening the arrow toggles expanded and collapsed state. Both when being in the settings and when being somewhere else.
  • Clicking "Settings" automatically expands it and opens the "Safe details", i.e. the first item in the dropdown.
    Can the settings section be collapsed when I am in the settings?
  • Accessing a non-Settings screen collapses the settings section.

[tschubotz]

@posthnikova I have some questions about the navigation here:

• When the settings section is collapsed, which screen should open when tapping it? Owners?
• Can the settings section be collapsed when I am in the settings?
• Assuming I am on "Policies", I go to the transaction list, does this collapse the settings section?
  • If yes, what screen opens when tapping "settings" again in the sidebar?

[posthnikova]

When the settings section is collapsed, which screen should open when tapping it? Owners?

Safe details. You end up on the first screen in the dropdown.

Can the settings section be collapsed when I am in the settings?

Yes. You can collapse or expand any dropdown when you click on the arrow.

Assuming I am on "Policies", I go to the transaction list, does this collapse the settings section?

Yes. The dropdown collapses when you go to another section.

If yes, what screen opens when tapping "settings" again in the sidebar?

Safe details, again. But you can expand the 'Settings' dropdown and go directly to policies.

[tschubotz]

Thanks, added this to the ticket description.

[katspaugh]

@alongoni says the component already supports sub-menus. It's in the safe-react storybook.

[katspaugh]

Add links to the setting tabs so that they have their own URLs.