Create the account details tabbing system

[AustinBaggio]

Story

As a user interacting with the near blockchain, I want to be able to tab into different views, so that I can understand activity, assets, keys, and locked-up tokens.

Acceptance Criteria

Given any explorer user When I navigates to an account page on explorer Then I should see 4 tabs:

• [ ] Activity
• [ ] Assets (blank for now)
• [ ] Access keys (blank for now)
• [ ] Locked up (blank for now)

Assets

• Mockup (figma - "Prototype Production Page")