feat: enhanced navbar with run/submit buttons and improved UI for solve route

Problem Rendering testing 2

Problem render testing

Problem render markdown support at backend

New landing page UI

Improved problem description formatting, enhanced clean containers supports mobile view

UI enhancement for compiler page

// Replace 'public class Main' with 'public class Main_XXXXX'

Changed docker command inside executor files

Trigger deploy

Docker compose env pick fail fixed

Trigger ci/cd

Trigger ci/cd

.env.host and .env.docker setup, worker now executed using pm2

Redelpoy using ci/cd