Final: Restore /myusage, remove /upgrade and all plan-related codes

Feature: Add /myusage, blockquote /help, and user stats tracking. Remove /myplan

Refine: Change Ping to Pong and update uptime to bot start time

Refine: Add VPS uptime to /ping and fix new user logging

Fix: Caption feature conflicts and command prefix

Feature: Instant Caption integration in UI & /caption command

UI: Remove redundant Stats emoji & Fix: New user logging

UI: Beautify Force Sub & Clean Stats button; Fix: New user logging on start

Fix: UserNotParticipant crash & Update: Public Stats + New Premium Emoji IDs

Fix: TypeError in admin check (int is not iterable)

UI: Enable Force Sub and add Admin Stats button

Refactor: Restructure project folders into admin, user, and rename categories