Move navbar from `wildcard/components` folder to `client/web/src/nav`

Created by: 5h1rU

Problem statement

Navbar is not considered a Wildcard library component anymore. Moving to a place outside wildcard is ideal for avoiding confusion about which elements belong to WCL.

Success criteria

1. The client/wildcard/src/components/NavBar is moved to client/web/src/nav/NavBar
2. NavBar exports are removed from client/wildcard/src/components/index.ts
3. Imports in consumers are changed to use the new NavBar location — client/web/src/nav/NavBar.