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/binary-extensions/readme.md

@@ -0,0 +1,25 @@
+# binary-extensions
+
+> List of binary file extensions
+
+The list is just a [JSON file](binary-extensions.json) and can be used anywhere.
+
+## Install
+
+```sh
+npm install binary-extensions
+```
+
+## Usage
+
+```js
+const binaryExtensions = require('binary-extensions');
+
+console.log(binaryExtensions);
+//=> ['3ds', '3g2', …]
+```
+
+## Related
+
+- [is-binary-path](https://github.com/sindresorhus/is-binary-path) - Check if a filepath is a binary file
+- [text-extensions](https://github.com/sindresorhus/text-extensions) - List of text file extensions