[FEAT] Settings pages UI updates (#833)

* WIP main sidebar designs

* hover states and active states for main sidebar

* main and settings sidebar UI updates & improve performance using Link instead of <a>

* update borders to match rest of UI in all pages

* update borders of all containers to match rest of UI

* remove unneeded conditional

* custom messages component redesign and appearance settings layout changes

* improve UX of custom logo file uploader component to match designs

* fix sizing on custom logo upload field

* WIP footer customization new UI

* implement new UI for custom footer
icon selection

* update workspace chats to match new settings UI

* update system preferences to match new settings UI

* update export workspace chats button border

* update invitations settings page to match new settings UI

* update instance workspaces settings page to match new settings UI

* update instance workspaces to match new settings UI

* update api keys settings to match new settings UI

* update LLM preferences settings to match new settings UI

* update embedding preferences settings to match new settings UI

* update vector db preferences settings to match new settings UI

* align all buttons in settings pages

* update ui for data connectors to match rest of settings ui

* update UI for embed chat

* updated ui for logging page

* fix duplicate attributes left from merge conflicts

* fix dynamic class to use ternary

* remove transition classes where it is not needed