Retain query string when redirecting to Shared Bookmarks "Landing Page"

[karlhorky]

Similar to #1336

What are your thoughts on retaining the query string when redirecting logged-out users to the Shared Bookmarks option for Landing page:

before redirect:
https://demo.linkding.link/?q=%23china

after redirect:
https://demo.linkding.link/bookmarks/shared?q=%23china

That would make it easier to navigate directly to a tag in the shared bookmarks page.

Here's the view of the Landing page option in Global settings:

Landing page

[ Shared Bookmarks ▼ ]

The page that unauthenticated users are redirected to when accessing the root URL.