feat: Add central error handler

Added:
- Added Midleware to capture and handle all errors
    - will catch error from `throw ...` and `next(...)`
- Added RequestError base error class to build consistent error objects
- Added common errors like `UnauthorizedRequestError`, `BadRequestError`
- Added consistent Logging solution using `winston`
    - Supports Loki Transporter using `winston-loki`
- Outputing Legal disclaimer to console when `TELEMETRY_ENABLED=true`

Changed:
- Changed console.log to getLogger() favor of using consistent logging

backend/src/types/express/index.d.ts

@@ -1,5 +1,6 @@
 import * as express from 'express';
 
+
 // TODO: fix (any) types
 declare global {
 	namespace Express {