Bank Manager App with Sparkasse CSV Import

[moohkooh]

This PR introduces a comprehensive Bank Management Application built with Angular and NestJS.

Key features:

• NestJS Backend: Utilizes TypeORM with PostgreSQL (Docker) for data persistence. Implements JWT-based authentication for secure access.
• Angular Frontend: Built with Angular Material for a modern UI. Includes pages for account management, category/budget setup, and an interactive transaction import wizard.
• Sparkasse CSV Import: A specialized parser for Sparkasse bank exports. Features an intelligent categorization system that 'learns' from user input to automate future imports.
• Budgeting Dashboard: Visualizes monthly spending against defined budgets using Chart.js, allowing users to track their financial health across multiple accounts.
• Categorization & Fixed Costs: Allows users to define categories, mark them as fixed costs, and set strict monthly budgets.

The project includes a docker-compose.yml for easy database setup and a .env.example for environment configuration.

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PR created automatically by Jules for task 14173489082822434961 started by @moohkooh

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