Update environment configuration, Docker setup, and frontend/backend dependencies

- Updated .env.example and .env files for backend and frontend with placeholder values.
- Enhanced .gitignore to include additional files and directories.
- Modified docker-compose.yml to change image names and improve service health checks.
- Updated README.md and SETUP_THE_PROJECT.md for clearer setup instructions.
- Added database initialization scripts and SQL files for structured database setup.
- Updated frontend Dockerfile to use Node.js 22 and adjusted package.json scripts.
- Improved error handling and logging in start scripts for better debugging.
- Added reCAPTCHA support in the signup page with conditional loading based on environment variables.

worklenz-backend/Dockerfile

@@ -1,5 +1,5 @@
-# Use the official Node.js 18 image as a base
-FROM node:18
+# Use the official Node.js 20 image as a base
+FROM node:20
 
 # Create and set the working directory
 WORKDIR /usr/src/app