feat: Major updates to backend structure and security enhancements

- Removed `COMMON_ERRORS.md` file to streamline documentation.
- Added `Flask-Limiter` for rate limiting and `redis` for session management in `requirements.txt`.
- Expanded `ROADMAP.md` to include completed security features and planned enhancements for version 2.2.
- Enhanced `setup_myp.sh` for ultra-secure kiosk installation, including system hardening and security configurations.
- Updated `app.py` to integrate CSRF protection and improved logging setup.
- Refactored user model to include username and active status for better user management.
- Improved job scheduler with uptime tracking and task management features.
- Updated various templates for a more cohesive user interface and experience.

backend/app/node_modules/yaml/bin.mjs

@@ -0,0 +1,11 @@
+#!/usr/bin/env node
+
+import { UserError, cli, help } from './dist/cli.mjs'
+
+cli(process.stdin, error => {
+  if (error instanceof UserError) {
+    if (error.code === UserError.ARGS) console.error(`${help}\n`)
+    console.error(error.message)
+    process.exitCode = error.code
+  } else if (error) throw error
+})