chore: streamed home content and nav bar auth area and added loading skeleton

chore: added loading skleton everywhere

chore: added tutor filter loading state

style: removed some elements

chore: showed multiple next sessions and restricted putting start time from the past time

fix: fixed time rendering mismatch and hydration error and moved time checks to client from server action

style: changed some styling

chore: created separated button for deleting slots

style: come style changes

chore: removed unnecessary console logs

style: fixed spacing in dashboard

style: centered loading spinner of submit button

chore: fetched stats for home specifically

chore: added a env file for backend API

chore: added custom favicon