implement link manager for codepair

[easylogic]

What this PR does / why we need it?

This is a link manager that allows you to manage links in codepair in groups.

• add groups, links
• nest groups and links
• Automatically generate code pair links
• Add, delete, or update links
• Copy link
• Added QRCODE viewer feature when sharing

https://user-images.githubusercontent.com/591983/225010829-d486fcba-8a0e-4240-a7b2-ecbee967be84.mov

TODO List

• [ ] Search for saved links

Any background context you want to provide?

By default, it is stored in the browser using localStorage, but if there is a login feature later, it can be switched to CRDT to provide synchronization.

What are the relevant tickets?

Fixes #

Checklist

• [x] Added relevant tests or not required
• [x] Didn't break anything