add Keystone to Integrations to allow users to find it if they miss the dropdown menu on the home screen

[decentralistdan]

• Why are we doing this?

  • we would like to do this small improvement which surfaced as a part of feedback at the Z|ECC Summit

• What are we doing?

  • add Keystone icon to the Integrations Settings menu

  • add another access point for connecting a Keystone hardware wallet to the Integrations screen

  • light mode design

  • dark mode design

  • upon tap a user should be routed to enter the Keystone integration flow

  • if the user closes the flow by tapping on the X, they should be routed back to the Integrations screen

• What does success look like? (testing acceptance criteria)

  • as a user I can navigate to the Integrations screen in the Settings menu

  • I can tap on "Connect Keystone Hardware Wallet" and be navigated to the Keystone integration flow

  • if I tap on the X, I should be routed back to the Integrations screen